Version 2 of the Graph Library builds upon version 1, but adds support for pretty much every request we've received over the last 5 years. Some of the main features include:
java.awt.ImageInstalling the library for most uses is as simple as adding the
bfograph.jar file to your CLASSPATH - the library does
not require any additional JARs, although they may be needed for some features
to work. Specifically, creating graphs from XML will require a SAX parser, and creating
graphs to PDF will require our PDF
library.
If you're planning on creating graphs from a JSP page or Web Service, these are the steps you need to follow to install the Tag library.
bfograph.jar file to the WEB-INF/lib
directory of your web application (if this directory doesn't exist, create
it).WEB-INF/web.xml file:<servlet> <servlet-name>GraphServlet</servlet-name> <servlet-class>org.faceless.graph2.tag.GraphServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>GraphServlet</servlet-name> <url-pattern>/servlet/GraphServlet/*</url-pattern> </servlet-mapping>
<taglib> <taglib-uri>http://big.faceless.org/products/graph</taglib-uri> <taglib-location>/WEB-INF/lib/bfograph.jar</taglib-location> </taglib>
img tag to the HTML which loads the image from a servlet - the
GraphServlet. The path to that servlet is specified in the
url-pattern above, and should be set to /servlet/GraphServlet/* (note
the trailing asterisk - this is very important).
This path may be changed, if necessary, by setting a context-param called
org.faceless.graph2.tag.ServletPath to the required URL (not including the
asterisk).
GraphServlet. This defaults to 50, but if you're receiving 404 errors
stating the Graph has expired you can increase this number by setting an
init-param on the GraphServlet named storesize to a higher number.
</web-app>.
AxesGraph graph = new AxesGraph(); // 1. Create Graph
BarSeries series = new BarSeries("Fruit"); // 2. Create Series
series.set("Apples",10);
series.set("Oranges",20);
series.set("Bananas",13);
series.set("Cherries",12);
series.setBarWidth(0.8); // 3. Set the BarWidth to 80%
graph.addSeries(series); // 4. Add Series to Graph
ImageOutput out = new ImageOutput(300, 200);
graph.draw(out); // 5. Draw Graph to Output
out.writePNG(new FileOutputStream("BarGraphExample.png"), 0); // 6. Save as PNG to file
This is hopefully fairly self-explanatory - a graph is created, a series is created and
added to that graph, then the graph is drawn to an Output object, which in
this case is an ImageOutput. This can then be rendered to a PNG by calling the
writePNG method.
If you'd rather define your graphs in XML, you can use the XMLGraph class to
parse the XML and create a graph. The XMLToGraph.java example supplied with
the library can be used to parse XML from a file or URL and write the graph to a file. Here
is some XML which gives identical results to the example above:
<?xml version="1.0"?> <axesgraph width="300" height="200"> <barseries name="Fruit" barwidth="80%"> <data x="Apples" y="10"/> <data x="Oranges" y="20"/> <data x="Bananas" y="13"/> <data x="Cherries" y="12"/> </barseries> </axesgraph>
Save this XML to a file, change into theexamples directory and run
java XMLToGraph yourfile.xml - you will get a file called
yourfile.png containing your graph.
The JSP interface is almost identical to the XML above. The main differences are that you
must include the tag library in your JSP, and you must prefix all the tags with an
appropriate prefix (we recommend bfg) to invoke the tag library. Here's the
same graph again, embedded in a JSP - the results are displayed alongside.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="200">
<bfg:barseries name="Fruit" barwidth="80%">
<bfg:data x="Apples" y="10"/>
<bfg:data x="Oranges" y="20"/>
<bfg:data x="Bananas" y="13"/>
<bfg:data x="Cherries" y="12"/>
</bfg:barseries>
</bfg:axesgraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <html xmlns="http://www.w3.org/1999/xhtml"> <body> <% session.setAttribute("items", new String[] { "A", "B", "C", "D" }); %> <bfg:axesgraph width="300" height="200" id="mygraph"> <bfg:barseries name="Test" barwidth="0.8"> <c:forEach items="${items}" var="i"> <bfg:data x="${i}" y="<%=Double.toString(Math.random()*10)%>" /> </c:forEach> </bfg:barseries> </bfg:axesgraph> </body> </html>
This example makes use of the "Expression Language" added in the Servlet 2.4 Specification; it's a good fit with JSTL and worth using (here's a primer to get you started). This isn't required however - tags from the graph library can be interleaved with tags from other tag libraries without any special syntax.
Notice also the value of the "y" attribute in the examples above must be passed as a String, not a number. This isn't always the case, but for some attributes that can take multiple types of data ("y" can accept numbers or dates), limitations in some JSP implementations require that the parameter is specified as a String.
Generally speaking the URL of the image created by the tag library is of no interest to the page author, but if necessary it can be derived - appending
<p>The URL of the generated image is ${bfgimagepath}/mygraph"</p>
to the JSP page would display the URL of the image (note "mygraph" is the ID attribute of the image - this must be specified if you need to retrieve the URL of the image).
Output
classes. When using a Tag Library, this is controlled by the format attribute
on the graph tag. The default value, png, causes the graphs to be saved as
PNG images, but this can be set to svg to embed the graphs as SVG, or flash to embed them as Macromedia Flash images instead.
(Note currently Flash and SVGs do not work with JavaScript, so the notes section on interactivity would not apply).
Graph size can be controlled by the width and height attributes,
which are mandatory, and other tags appropriate to an image can be added - for example, to
put a border around the graph, adding border="1" would result in the image
being embedded in the page with border="1". Any other HTML4.0 tags that can be
applied to an img or object can be used.
Colors in the graph may be one of the following options:
none, black, red, blue, yellow, orange, gray, white, transparent#F0FFFF) or rgb() (eg rgb(240,255,100%) - the same color).transparent(c, n), where c is a color and n is a percentage specificying the opacity of the color - 100% is opaque, 0% is transparent.pattern(n, [fg, bg]), where n is the name or URL of a bitmap pattern and the optional fg and bg parameters are the foreground and background colors to use (specified as a fixed color or as #RRGGBB). The pattern may be specified as a URL to a PBM format image, or one of the predefined values bricks, circles, crosshatch, crosshatch30, crosshatch45, fishscales, gray0, gray10, gray15, gray20, gray25, gray30, gray35, gray40, gray45, gray5, gray50, gray55, gray60, gray65, gray70, gray75, gray80, gray85, gray90, gray95, hexagons, horizontal, horizontalsaw, hs_bdiagonal, hs_cross, hs_diagcross, hs_fdiagonal, hs_horizontal, hs_vertical, left30, left45, leftshingle, octagons, right30, right45, rightshingle, scatter1, scatter2, smallfishscales, vertical, verticalbricks, verticalleftshingle, verticalrightshingle, verticalsaw or weave. Bitmap patterns were added in release 2.1.1java.awt.TexturePaint.hsl(h, s, l) or hsv(h, s, v) can be used to specify RGB colors using Hue/Saturation/Lightness or Hugh/Saturation/Value. You can also use hsla and hsva if you want tin include an alpha value.gradient(c1, c2) may be used to draw a gradient from the colors c1 to c2. If you're running Java 1.6 you can specify more than two colors as well as the points where the colors transition: for instance, gradient(red, 5, green, 10, blue, 15) would smoothly transation from the minimum value to red when the value is 5, then to green at 10 and blue at 15. For hard transitions you can specify two close together numbers, eg gradient(green, 5, yellow, 5.001, yellow, 8, red, 8.001) will be green below 5, yellow between 5 and 8 and red above 8.
In order to understand this aspect of the library, you need some background on how the
graphs are created. As explained above, the tag library works by parsing the tags, creating
the graph and storing it in the Servlet Context, then writing some HTML to the page being
creating which loads that image from the GraphServlet. Adding interactive features to a
graph causes an ImageMap to be created as well, using the HTML4.0
area tag. This area is associated with the image, and the various polygons in
the imagemap have the appropriate JavaScript added to them.
For interactive SVG graphs (added in 2.1), the process is similar but simpler, as the
JavaScript/ECMAScript required for interaction is actually embedded in the SVG itself.
The XML is almost identical to that used by the bitmap-based interactive graphs - the
only difference is the <script> tag must be embedded directly into the
graph XML, rather than in the PDF page. An example of this can be seen here.
The following HTML4.0 attributes can be used on marker, data and
lineseries tags:
href to the bfg:data tag.
Linegraphs are a little different, because they represent a continuous curve of values.
Consequently any HTML4.0 tags in a Line series are applied to the lineseries, rather
than the data. The Sine curve example shows how this
is done. Two special "variables" which are defined which allow you to display the value of the
line under the mouse pointer - roll the mouse over the approximate line in the example above
and you will see the values of the curve displayed in a popup. This is done by using the
special variables "seriesx" and "seriesy". When the Tag Library sees these variables, it
replaces them with a call to a function which will return the values you'd expect.
In 2.0.3 the ability to create graphs as a web service was added. This is done with a SOAP
request, and raw XML may also be parsed. The server-side setup is exactly the same as for the tag library
- the web.xml file should be exactly the same. No additional JARs are required as we do all
the SOAP parsing internally. The requests are made to the GraphServlet, which
generates the graph and returns it in one of several ways. The XML that describes the graph is exactly
the same as used for the tag library - optionally including the interactive attributes listed above.
Those using the SOAP interface will find the bfograph-2.0.wsdl in the "docs" directory
useful, as it defines the available web-services. Note that as supplied this WSDL points to our own demo
server. This is almost certainly not what you want to do - for a start, all the graphs will be DEMO
stamped. Be sure to modify the WSDL to point to the URL of your local installation.
Now a few examples. The first and simplest approach is simply to convert raw XML into a graph. To do this
you simply POST the XML defining the graph to the url /servlet/GraphServlet/xml-raw, and the
graph will be returned directly. An example HTTP session might look like this (request and response are
seperated by a dotted line):
POST /yourwebapplication/servlet/GraphServlet/xml-raw HTTP/1.1 Host: www.yourserver.com Content-Type: text/xml; charset=UTF-8 Content-Length: 228 <?xml version="1.0"?> <piegraph height="400" width="400" yrotation="-40"> <label font="18pt bold Arial">My First Pie Graph</label> <data key="apples" value="18" /> <data key="oranges" value="22" /> </piegraph>
HTTP/1.1 200 OK Content-Type: image/png Content-Length: 9580 Connection: close Date: Mon, 10 Oct 2005 14:15:49 GMT ... PNG formatted image follows...
/xml-raw), and the Content-Length header, which must be the size of your
XML in bytes. The encoding is also crucial, as the default encoding for XML is UTF-8, while the default
encoding for HTTP is ISO-8859-1. We recommend always encoding your XML requests as UTF-8, and setting
the encoding of the request explicitly as we've done above.
The xml-raw signifies to the GraphServlet that XML is coming in and a raw image is
expected as output. Other possibilities include "xml-html", which parses the same raw XML but returns
a snippet of HTML which could be included into a page to load the image. Here's an example:
POST /yourwebapplication/servlet/GraphServlet/xml-html HTTP/1.1 Host: www.yourserver.com Content-Type: text/xml; charset=UTF-8 Content-Length: 228 <?xml version="1.0"?> <piegraph height="400" width="400" yrotation="-40"> <label font="18pt bold Arial">My First Pie Graph</label> <data key="apples" value="18" /> <data key="oranges" value="22" /> </piegraph>
HTTP/1.1 200 OK Content-Type: text/html; charset=UTF-8 Connection: close Date: Mon, 10 Oct 2005 14:15:49 GMT <img src="http://www.yourserver.com/yourwebapplication/servlet/GraphServlet/image/1" width="400" height="400" />
So instead of returning the image directly, it stores it and passes back a URL to request it. This route
also means more than just the image can be returned - if actions are defined in the XML then the returned
HTML would include an image map and javascript to call those actions. In fact this applies to any request type
other than xml-raw, not just xml-html.
Two variations on xml-raw and xml-html were added in 2.3.1.
xml-raw-form and xml-html-form work in an identical way, but instead of reading the
XML directly from the HTTP request content, the XML is read from a parameter called "xml". This is a much
simpler way of getting up and running with web services, as it means you can create a form field called "xml",
populate it with the XML you want to convert and then submit the form to
servlet/GraphServlet/xml-raw-form to get the image back. The form can be submitted as a POST or a
GET, although be aware some older browsers have a limit on the size of the URL in a GET request.
For a slightly more structured approach, you can format the request as a SOAP (Simple Object Access Protocol) request. The library understands both SOAP 1.1 and SOAP 1.2 requests, and will format the response as a SOAP response of the same version as the request.
For SOAP requests, the XML defining the graph is wrapped inside a "request" object which determines the
type of SOAP request being made. SOAP doesn't handle raw binary data well, so there are two methods for
returning the image. The first is GetHTML, which is similar to xml-html -
some HTML is returned as the body of the SOAP response, and the image is stored on the server:
POST /servlet/GraphServlet/soap HTTP/1.0 Host: yourserver.com Content-Type: application/soap+xml; charset="utf-8" Content-Length: 611 <soap:Envelope xmlns:bfg="http://bfo.co.uk/ns/graph?version=2" xmlns:bfgsoap="http://bfo.co.uk/ns/graph/soap?version=2" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Body> <bfgsoap:GetHTML> <bfg:axesgraph width="600" height="600"> <bfg:barseries name="January"> <data x="Frank" y="50"/> <data x="Wendy" y="68"/> <data x="Kate" y="103"/> </bfg:barseries> </bfg:axesgraph> </bfgsoap:GetHTML> </soap:Body> </soap:Envelope>
HTTP/1.1 200 OK Content-Type: text/xml; charset=UTF-8 Connection: close Date: Sat, 10 Dec 2005 18:34:36 GMT BFO-Graph-Version: 2.1 <?xml version="1.0"?> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <soap:Body> <html xmlns="http://www.w3.org/TR/REC-html40"> <img width="600" height="600" id="bfggraph3" src="http://yourserver.com/servlet/GraphServlet/image/3/bfggraph3" /> </html> </soap:Body> </soap:Envelope>
As you can see the Body of the SOAP response contains a block of XHTML containing the code to inject
into the webpage. Also note that the request, like all SOAP requests, requires the XML passed in to have
a namespace specified. The namespace for the Graph Library XML is shown above, and is defined in the
constant XMLGraph.NAMESPACE for convenience. The GetHTML element also requires a
namespace, which is the bfgsoap namespace you can see defined in the XML above.
If you're not interested in the HTML and just want the image back, the GetMultipart method
returns the SOAP response as a multipart response, including both the HTML and the image as an attachment:
POST /servlet/GraphServlet/soap HTTP/1.0 Host: yourserver.com Content-Type: application/soap+xml; charset="utf-8" Content-Length: 622 <soap:Envelope xmlns:bfg="http://bfo.co.uk/ns/graph?version=2" xmlns:bfgsoap="http://bfo.co.uk/ns/graph/soap?version=2" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Body> <bfgsoap:GetMultipart> <bfg:axesgraph width="600" height="600"> <bfg:barseries name="January"> <data x="Frank" y="50"/> <data x="Wendy" y="68"/> <data x="Kate" y="103"/> </bfg:barseries> </bfg:axesgraph> </bfgsoap:GetMultipart> </soap:Body> </soap:Envelope>
HTTP/1.1 200 OK Content-Type: Multipart/Related; boundary=MIME_boundary; type="text/xml"; start="<bfggraph2.xml@yourserver.com>" Connection: close Date: Sat, 10 Dec 2005 18:31:58 GMT BFO-Graph-Version: 2.1 --MIME_boundary Content-Type: text/xml; charset=UTF-8 Content-Transfer-Encoding: 8bit Content-ID: <bfggraph2.xml@yourserver.com> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <soap:Body> <html xmlns="http://www.w3.org/TR/REC-html40"> <img width="600" height="600" id="bfggraph2" src="cid:bfggraph2.img@yourserver.com?bfggraph2" /> </html> </soap:Body> </soap:Envelope> --MIME_boundary Content-Type: image/png Content-Transfer-Encoding: binary Content-ID: <bfggraph2.img@yourserver.com?bfggraph2> Content-Length: 8439 ... 8439 bytes of PNG image ... --MIME_boundary--
This technique can be used to return the HTML and the image in one request. The image can be extracted directly from the response with a suitable API, such as SAAJ from Sun.
It's easy to extend the Axis class to plot custom values on an axis. The main
thing to remember is that inside the graph, everything is a number. Lets say for
example you want to plot a Line series against the days of the week. Your axis is going to
read "Monday", "Tuesday", "Wednesday" and so on, but internally the values stored in the
graph are going to be 0, 1 and 2. This is how dates are handled (they're converted to
doubles) and even bars - the first bar is treated as x=0, the second is x=1 and so on.
package test;
import org.faceless.graph2.*;
public class MyAxis extends Axis {
private String[] days = { "Sun", "Mon", "Tue",
"Wed", "Thu", "Fri", "Sat" };
public MyAxis() {
super();
}
public String format(double x) {
return days[(int)x];
}
public double[] steps(double min, double max) {
return new double[] { 0, 1, 2, 3, 4, 5, 6 };
}
} | <axesgraph width="600" height="600">
<axis pos="bottom" type="test.MyAxis" />
<lineseries name="Values">
<data x="0" y="130" />
<data x="1" y="140" />
<data x="2" y="120" />
<data x="3" y="180" />
<data x="4" y="150" />
<data x="5" y="110" />
<data x="6" y="160" />
</lineseries>
</axesgraph> |
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" backwallpaint="stripe(#EEEEEE,line=black,axis=left,altaxis=bottom)" xrotation="30" yrotation="60" defaultcolors="transparent(red,0.8),transparent(yellow,0.6),green">
<bfg:axis pos="left" type="int" wallpaint="stripe(#EEEEEE,line=black)"/>
<bfg:axis pos="bottom" type="bar" wallpaint="stripe(#EEEEEE,line=black)"/>
<bfg:axis pos="z" type="zaxis"/>
<bfg:barseries name="1999" barwidth="0.8" bardepth="0.8">
<bfg:data x="apples" y="20"/>
<bfg:data x="oranges" y="18"/>
<bfg:data x="bananas" y="12"/>
<bfg:data x="apricots" y="12"/>
<bfg:data x="grapes" y="13"/>
</bfg:barseries>
<bfg:barseries name="2000" barwidth="0.8" bardepth="0.8">
<bfg:data x="apples" y="25"/>
<bfg:data x="oranges" y="20"/>
<bfg:data x="bananas" y="14"/>
<bfg:data x="apricots" y="10"/>
<bfg:data x="grapes" y="15"/>
</bfg:barseries>
<bfg:barseries name="2001" barwidth="0.8" bardepth="0.8">
<bfg:data x="apples" y="30"/>
<bfg:data x="oranges" y="17"/>
<bfg:data x="bananas" y="17"/>
<bfg:data x="apricots" y="7"/>
<bfg:data x="grapes" y="13"/>
</bfg:barseries>
</bfg:axesgraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" backwallpaint="stripe(line=black,axis=bottom)">
<bfg:label font="16pt bold Arial">Multi Bar Graph</bfg:label>
<bfg:axis type="int" pos="left" wallpaint="stripe(line=black)"/>
<bfg:axis type="bar" pos="bottom" wallpaint="stripe(line=black)"/>
<bfg:multibarseries name="Groups">
<bfg:barseries name="1999" barwidth="75%" bardepth="75%">
<bfg:data x="apples" y="20"/>
<bfg:data x="oranges" y="18"/>
<bfg:data x="bananas" y="12"/>
<bfg:data x="apricots" y="12"/>
<bfg:data x="grapes" y="13"/>
</bfg:barseries>
<bfg:barseries name="2000" barwidth="75%" bardepth="75%">
<bfg:data x="apples" y="25"/>
<bfg:data x="oranges" y="20"/>
<bfg:data x="bananas" y="14"/>
<bfg:data x="apricots" y="10"/>
<bfg:data x="grapes" y="15"/>
</bfg:barseries>
<bfg:barseries name="2001" barwidth="75%" bardepth="75%">
<bfg:data x="apples" y="30"/>
<bfg:data x="oranges" y="17"/>
<bfg:data x="bananas" y="17"/>
<bfg:data x="apricots" y="7"/>
<bfg:data x="grapes" y="13"/>
</bfg:barseries>
</bfg:multibarseries>
<bfg:key align="bottom" bordercolor="black"/>
</bfg:axesgraph>
multibarseries can help. As you can see it's very similar to the graph above.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" lightvector="3,0,-1" backwallpaint="stripe(#FCE9F2,white,axis=left)" xrotation="30" yrotation="20">
<bfg:axis type="int" pos="left" wallpaint="stripe(#FCE9F2,white)"/>
<bfg:stackedbarseries name="Groups">
<bfg:barseries name="1999" barwidth="70%" roundbars="true">
<bfg:data x="apples" y="20"/>
<bfg:data x="oranges" y="18"/>
<bfg:data x="bananas" y="12"/>
<bfg:data x="apricots" y="12"/>
<bfg:data x="grapes" y="13"/>
</bfg:barseries>
<bfg:barseries name="2000" barwidth="70%" roundbars="true">
<bfg:data x="apples" y="25"/>
<bfg:data x="oranges" y="20"/>
<bfg:data x="bananas" y="14"/>
<bfg:data x="apricots" y="10"/>
<bfg:data x="grapes" y="15"/>
</bfg:barseries>
</bfg:stackedbarseries>
</bfg:axesgraph>
stackedbarseries can be used to position bars on top of each other. Here we've
set the roundbars flag to true, and have played around with the light vector
slightly to reduce the shading on the back wall
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>.
<bfg:axesgraph width="350" height="300" zrotation="90" backwallpaint="stripe(#DDDDDD, #EEEEEE, line=#AAAAAA, axis=bottom, altaxis=left)">
<bfg:axis pos="bottom" type="bar" align="middle right"/>
<bfg:axis pos="left" type="date(dd-MMM)" align="bottom center" density="sparse"/>
<bfg:barseries name="timeline" barwidth="0.8">
<bfg:data x="Planning" min="03-JAN-2005" max="2-FEB-2005" color="#8080FF"/>
<bfg:data x="Definition" min="31-JAN-2005" max="8-FEB-2005" color="#C080C8"/>
<bfg:data x="Design" min="3-FEB-2005" max="24-FEB-2005" color="#FF80FF"/>
<bfg:data x="Development" min="21-FEB-2005" max="4-APR-2005" color="#FF80C0"/>
<bfg:data x="Integration" min="28-MAR-2005" max="11-APR-2005" color="#FF8080"/>
<bfg:data x="Testing" min="22-MAR-2005" max="4-MAY-2005" color="#FFC080"/>
<bfg:data x="Installation" min="4-MAY-2005" max="6-MAY-2005" color="#FFFF80"/>
<bfg:data x="Acceptance" min="6-MAY-2005" max="13-MAY-2005" color="#C0FF80"/>
<bfg:data x="Training" min="16-MAY-2005" max="27-MAY-2005" color="#80FF80"/>
<bfg:line y="8-FEB-2005" linethickness="1"/>
<bfg:line y="24-FEB-2005" linethickness="1"/>
<bfg:line y="4-APR-2005" linethickness="1"/>
<bfg:line y="4-MAY-2005" linethickness="1"/>
</bfg:barseries>
</bfg:axesgraph>
min and max on the bars and rotating the
whole thing by 90°, we've created a completely different type of graph with the same
components.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="400" backwallpaint="stripe(#eeeeee,axis=bottom,line=#cccccc,altaxis=left)">
<bfg:label font="16pt bold Arial">2004 UK TV Ratings</bfg:label>
<bfg:label font="14pt Arial">(with Gap)</bfg:label>
<bfg:axis pos="left" type="gap(decimal(0%),0.13,0.19)">
<bfg:label font="12pt bold Arial">% of Viewers</bfg:label>
</bfg:axis>
<bfg:axis pos="bottom" type="int">
<bfg:label font="12pt bold Arial">Month</bfg:label>
</bfg:axis>
<bfg:lineseries name="BBC1" color="#339900" linethickness="2">
<bfg:data x="1" y="0.253"/>
<bfg:data x="2" y="0.244"/>
<bfg:data x="3" y="0.247"/>
<bfg:data x="4" y="0.243"/>
<bfg:data x="5" y="0.246"/>
<bfg:data x="6" y="0.257"/>
<bfg:data x="7" y="0.245"/>
<bfg:data x="8" y="0.275"/>
<bfg:data x="9" y="0.243"/>
<bfg:data x="10" y="0.236"/>
<bfg:data x="11" y="0.239"/>
<bfg:data x="12" y="0.238"/>
</bfg:lineseries>
<bfg:lineseries name="BBC2" color="#FF9900" linethickness="2">
<bfg:data x="1" y="0.112"/>
<bfg:data x="2" y="0.106"/>
<bfg:data x="3" y="0.107"/>
<bfg:data x="4" y="0.103"/>
<bfg:data x="5" y="0.096"/>
<bfg:data x="6" y="0.087"/>
<bfg:data x="7" y="0.094"/>
<bfg:data x="8" y="0.108"/>
<bfg:data x="9" y="0.093"/>
<bfg:data x="10" y="0.097"/>
<bfg:data x="11" y="0.096"/>
<bfg:data x="12" y="0.095"/>
</bfg:lineseries>
<bfg:lineseries name="ITV" color="#993399" linethickness="2">
<bfg:data x="1" y="0.243"/>
<bfg:data x="2" y="0.246"/>
<bfg:data x="3" y="0.228"/>
<bfg:data x="4" y="0.227"/>
<bfg:data x="5" y="0.227"/>
<bfg:data x="6" y="0.221"/>
<bfg:data x="7" y="0.210"/>
<bfg:data x="8" y="0.196"/>
<bfg:data x="9" y="0.227"/>
<bfg:data x="10" y="0.234"/>
<bfg:data x="11" y="0.236"/>
<bfg:data x="12" y="0.230"/>
<bfg:marker type="star" size="15" color="#FF0000" bordercolor="white" x="8" y="0.196"/>
<bfg:label x="8" y="0.196" align="top left" paddingtop="2">Record low</bfg:label>
</bfg:lineseries>
<bfg:lineseries name="Channel 4" color="#CC0033" linethickness="2">
<bfg:data x="1" y="0.093"/>
<bfg:data x="2" y="0.096"/>
<bfg:data x="3" y="0.095"/>
<bfg:data x="4" y="0.096"/>
<bfg:data x="5" y="0.101"/>
<bfg:data x="6" y="0.108"/>
<bfg:data x="7" y="0.125"/>
<bfg:data x="8" y="0.094"/>
<bfg:data x="9" y="0.092"/>
<bfg:data x="10" y="0.089"/>
<bfg:data x="11" y="0.092"/>
<bfg:data x="12" y="0.089"/>
</bfg:lineseries>
<bfg:lineseries name="Five" color="#3366FF" linethickness="2">
<bfg:data x="1" y="0.063"/>
<bfg:data x="2" y="0.068"/>
<bfg:data x="3" y="0.070"/>
<bfg:data x="4" y="0.069"/>
<bfg:data x="5" y="0.071"/>
<bfg:data x="6" y="0.067"/>
<bfg:data x="7" y="0.063"/>
<bfg:data x="8" y="0.062"/>
<bfg:data x="9" y="0.066"/>
<bfg:data x="10" y="0.065"/>
<bfg:data x="11" y="0.067"/>
<bfg:data x="12" y="0.060"/>
</bfg:lineseries>
<bfg:key align="bottom" color="#eeeeee">
<bfg:keyitem series="BBC1"/>
<bfg:keyitem series="BBC2"/>
<bfg:keyitem series="ITV"/>
<bfg:keyitem series="Channel 4"/>
<bfg:keyitem series="Five"/>
<bfg:keyitem marker="star" size="15" bordercolor="white" color="#FF0000">Record Low</bfg:keyitem>
</bfg:key>
</bfg:axesgraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" defaultcolors="#2FC71F,#FBB837">
<bfg:areaseries name="area">
<bfg:splineseries name="spline1" spline="catmullrom" bordercolor="transparent">
<bfg:data x="0" y="2.9"/>
<bfg:data x="1" y="4"/>
<bfg:data x="2" y="1.9"/>
<bfg:data x="3" y="3"/>
<bfg:data x="4" y="2"/>
</bfg:splineseries>
<bfg:splineseries name="spline2" spline="catmullrom" bordercolor="transparent">
<bfg:data x="0" y="3"/>
<bfg:data x="1" y="1"/>
<bfg:data x="2" y="4"/>
<bfg:data x="3" y="1"/>
<bfg:data x="4" y="2"/>
</bfg:splineseries>
</bfg:areaseries>
</bfg:axesgraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" backgroundcolor="#F0F0F0" backwallpaint="stripe(axis=bottom,line=#cccccc,altaxis=left)" xrotation="30" yrotation="30">
<bfg:label font="14pt bold Arial">Some EU Populations (2005)</bfg:label>
<bfg:axis pos="left" type="decimal(#m)"/>
<bfg:axis pos="bottom" type="marker" fontsize="20"/>
<bfg:barseries name="countries" color="#FFCC99" barwidth="80%">
<bfg:data x="flag.DK" y="5.432335" title="Denmark - 5.43m"/>
<bfg:data x="flag.FR" y="60.656178" title="France - 60.65m"/>
<bfg:data x="flag.DE" y="82.431390" title="Germany - 81.43m"/>
<bfg:data x="flag.IE" y="4.015676" title="Ireland - 4.02m"/>
<bfg:data x="flag.IT" y="58.103033" title="Italy - 58.1m"/>
<bfg:data x="flag.PT" y="10.566212" title="Portugal - 10.57m"/>
<bfg:data x="flag.ES" y="40.341462" title="Spain - 40.34m"/>
<bfg:data x="flag.SE" y="9.001774" title="Sweden - 9.0m"/>
<bfg:data x="flag.UK" y="60.441457" title="UK - 60.44m"/>
</bfg:barseries>
</bfg:axesgraph>
fontsize attribute is mandatory, and
controls the width of the marker (the height is scaled accordingly).
Another interested feature here is the title attribute being applied to each bar.
This attribute is an HTML4.0 attribute, rather than a Graph Library attribute, and so is
used by the Tag Library to create a simple tooltip for each bar. Try rolling the mouse over
one of the bars and leaving it there for a few seconds to see what we mean. More info on these
HTML4.0 attributes is covered in the Interactive Graphs section
above.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" border="0" backwallpaint="stripe(axis=bottom,line=#E0E0E0)">
<bfg:label font="10pt bold Arial">NASDAQ COMPOSITE (^IXIC) (Jan 05)</bfg:label>
<bfg:axis pos="bottom" type="date(dd-MMM-yy)" rotate="-20" align="right" paddingright="-9" paddingtop="0" density="sparse"/>
<bfg:axis pos="left" type="decimal($#,###)"/>
<bfg:candleseries name="Stock" color="black" pos="bottom left" barwidth="50%">
<bfg:data x="2005-01-03" open="2184.75" max="2191.60" min="2148.72" close="2152.15"/>
<bfg:data x="2005-01-04" open="2158.31" max="2159.64" min="2100.56" close="2107.86"/>
<bfg:data x="2005-01-05" open="2102.90" max="2116.75" min="2091.24" close="2091.24"/>
<bfg:data x="2005-01-06" open="2098.51" max="2103.90" min="2088.03" close="2090.00"/>
<bfg:data x="2005-01-07" open="2099.95" max="2103.39" min="2076.69" close="2088.61"/>
<bfg:data x="2005-01-10" open="2087.62" max="2111.43" min="2086.66" close="2097.04"/>
<bfg:data x="2005-01-11" open="2089.07" max="2090.62" min="2072.62" close="2079.62"/>
<bfg:data x="2005-01-12" open="2089.70" max="2093.44" min="2066.79" close="2092.53"/>
<bfg:data x="2005-01-13" open="2093.54" max="2094.80" min="2067.94" close="2070.56"/>
<bfg:data x="2005-01-14" open="2079.47" max="2088.58" min="2075.47" close="2087.91"/>
<bfg:data x="2005-01-18" open="2081.86" max="2106.19" min="2078.04" close="2106.04"/>
<bfg:data x="2005-01-19" open="2105.74" max="2105.84" min="2072.20" close="2073.59"/>
<bfg:data x="2005-01-20" open="2056.38" max="2065.59" min="2045.88" close="2045.88"/>
<bfg:data x="2005-01-21" open="2053.15" max="2058.00" min="2032.88" close="2034.27"/>
<bfg:data x="2005-01-24" open="2040.13" max="2043.97" min="2008.68" close="2008.70"/>
<bfg:data x="2005-01-25" open="2022.08" max="2037.18" min="2017.58" close="2019.95"/>
<bfg:data x="2005-01-26" open="2034.69" max="2049.34" min="2028.19" close="2046.09"/>
<bfg:data x="2005-01-27" open="2042.77" max="2053.94" min="2036.09" close="2047.15"/>
<bfg:data x="2005-01-28" open="2052.54" max="2055.13" min="2024.36" close="2035.83"/>
<bfg:data x="2005-01-31" open="2053.47" max="2063.18" min="2053.47" close="2062.41"/>
<bfg:line y="2008.68" color="red" dash="2,2"/>
<bfg:line y="2191.60" color="blue" dash="2,2"/>
</bfg:candleseries>
</bfg:axesgraph>
line) tag.
Lines can be drawn between any two points on the graph - here the X co-ordinates are not
specified, so they cover the full width of the graph.
Also new here is the formatting of the X axis. The values plotted here are rotated and have had their alignment and padding changed to position them as they are.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" border="0" backwallpaint="stripe(axis=bottom,line=#E0E0E0)">
<bfg:label font="10pt bold Arial">NASDAQ COMPOSITE (^IXIC) (Jan 05)</bfg:label>
<bfg:axis pos="bottom" type="date(yyyy-MM-dd)" rotate="90" paddingtop="5" paddingleft="-14" align="left top" density="sparse"/>
<bfg:axis pos="left" type="decimal($#,###)"/>
<bfg:axis pos="right" type="decimal(0m)"/>
<bfg:lineseries name="Price" color="red" pos="bottom left" linethickness="2">
<bfg:data x="2005-01-03" y="2184.75"/>
<bfg:data x="2005-01-04" y="2158.31"/>
<bfg:data x="2005-01-05" y="2102.90"/>
<bfg:data x="2005-01-06" y="2098.51"/>
<bfg:data x="2005-01-07" y="2099.95"/>
<bfg:data x="2005-01-10" y="2087.62"/>
<bfg:data x="2005-01-11" y="2089.07"/>
<bfg:data x="2005-01-12" y="2089.70"/>
<bfg:data x="2005-01-13" y="2093.54"/>
<bfg:data x="2005-01-14" y="2079.47"/>
<bfg:data x="2005-01-18" y="2081.86"/>
<bfg:data x="2005-01-19" y="2105.74"/>
<bfg:data x="2005-01-20" y="2056.38"/>
<bfg:data x="2005-01-21" y="2053.15"/>
<bfg:data x="2005-01-24" y="2040.13"/>
<bfg:data x="2005-01-25" y="2022.08"/>
<bfg:data x="2005-01-26" y="2034.69"/>
<bfg:data x="2005-01-27" y="2042.77"/>
<bfg:data x="2005-01-28" y="2052.54"/>
<bfg:data x="2005-01-31" y="2053.47"/>
</bfg:lineseries>
<bfg:barseries name="Volume" color="#D0D0D0" bordercolor="transparent" pos="bottom right" barwidth="50%">
<bfg:data x="2005-01-03" min="18" max="18.238000"/>
<bfg:data x="2005-01-04" min="18" max="20.981500"/>
<bfg:data x="2005-01-05" min="18" max="21.062200"/>
<bfg:data x="2005-01-06" min="18" max="21.050700"/>
<bfg:data x="2005-01-07" min="18" max="20.036300"/>
<bfg:data x="2005-01-10" min="18" max="21.346800"/>
<bfg:data x="2005-01-11" min="18" max="20.437700"/>
<bfg:data x="2005-01-12" min="18" max="22.313600"/>
<bfg:data x="2005-01-13" min="18" max="22.177000"/>
<bfg:data x="2005-01-14" min="18" max="19.838400"/>
<bfg:data x="2005-01-18" min="18" max="20.848600"/>
<bfg:data x="2005-01-19" min="18" max="21.116100"/>
<bfg:data x="2005-01-20" min="18" max="22.576700"/>
<bfg:data x="2005-01-21" min="18" max="22.102400"/>
<bfg:data x="2005-01-24" min="18" max="20.982700"/>
<bfg:data x="2005-01-25" min="18" max="21.919100"/>
<bfg:data x="2005-01-26" min="18" max="21.742200"/>
<bfg:data x="2005-01-27" min="18" max="23.753800"/>
<bfg:data x="2005-01-28" min="18" max="26.904600"/>
<bfg:data x="2005-01-31" min="18" max="21.931300"/>
</bfg:barseries>
</bfg:axesgraph>
verticalscaling and horizontalscaling attributes. We've also turned off borders on the bars by making them transparent, for a slightly different effect.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" xrotation="30" yrotation="20" lightlevel="100">
<bfg:label font="16pt bold Arial">Texture</bfg:label>
<bfg:barseries name="Fruit" barwidth="80%">
<bfg:data x="apples" y="22" color="file:/home/web/graph/examples/docresources/red156.jpg"/>
<bfg:data x="oranges" y="29" color="file:/home/web/graph/examples/docresources/green035.gif"/>
<bfg:data x="bananas" y="26" color="file:/home/web/graph/examples/docresources/yello040.jpg"/>
<bfg:data x="apricots" y="27" color="file:/home/web/graph/examples/docresources/blue003.jpg"/>
<bfg:data x="watermelon" y="24" color="file:/home/web/graph/examples/docresources/orang001.jpg"/>
</bfg:barseries>
</bfg:axesgraph>
java.awt.TexturePaint object, whereas in the XML and JSP interface the image is specified as a URL (it may be a GIF, JPEG or PNG). Note the shading on the side away from the light.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="400" border="0" backwallpaint="stripe(#FFFFCC,axis=bottom,line=#FFCC33,altaxis=left)">
<bfg:label font="12pt bold Arial">Return vs. Importance</bfg:label>
<bfg:axis pos="left" type="int" min="0" max="10" linethickness="3" color="#FFCC33">
<bfg:label font="12pt bold Arial">Return</bfg:label>
</bfg:axis>
<bfg:axis pos="bottom" type="int" min="0" max="10" linethickness="3" color="#FFCC33">
<bfg:label font="12pt bold Arial">Importance</bfg:label>
</bfg:axis>
<bfg:bubbleseries name="Project A1" color="#9999FF">
<bfg:data x="8" y="8" xradius="1.6" yradius="1.6" xrange="0" yrange="0" color="#9999FF" bordercolor="#FF9900" linethickness="4"/>
</bfg:bubbleseries>
<bfg:bubbleseries name="Project A2" color="#CC99FF">
<bfg:data x="6" y="8" xradius="1.2" yradius="1.2" xrange="0" yrange="0" color="#CC99FF" bordercolor="#5E8109" linethickness="4"/>
</bfg:bubbleseries>
<bfg:bubbleseries name="Project B" color="#CCFFCC">
<bfg:data x="5.5" y="6" xradius="1.3" yradius="1.3" xrange="0" yrange="0" color="#CCFFCC" bordercolor="#5E8109" linethickness="4"/>
</bfg:bubbleseries>
<bfg:bubbleseries name="Project C" color="#FFCC99">
<bfg:data x="3" y="9" xradius="0.6" yradius="0.6" xrange="0" yrange="0" color="#FFCC99" bordercolor="#AA0036" linethickness="4"/>
</bfg:bubbleseries>
<bfg:bubbleseries name="Project D" color="#E2EBF0">
<bfg:data x="7.5" y="4" xradius="1.1" yradius="1.1" xrange="0" yrange="0" color="#E2EBF0" bordercolor="#A1BBEE" linethickness="4"/>
</bfg:bubbleseries>
<bfg:bubbleseries name="Project E" color="#CCCC99">
<bfg:data x="9" y="3" xradius="0.9" yradius="0.9" xrange="0" yrange="0" color="#CCCC99" bordercolor="#5E8109" linethickness="4"/>
</bfg:bubbleseries>
<bfg:bubbleseries name="Project F" color="#E9ECD9">
<bfg:data x="2" y="4" xradius="0.4" yradius="0.4" xrange="0" yrange="0" color="#E9ECD9" bordercolor="#5E8109" linethickness="4"/>
<bfg:line x="10" linethickness="3" color="#FFCC33"/>
<bfg:line x="5" linethickness="3" color="#FFCC33"/>
<bfg:line y="10" linethickness="3" color="#FFCC33"/>
<bfg:line y="5" linethickness="3" color="#FFCC33"/>
<bfg:label x="0.10" y="0.45" align="left" textcolor="#000000">Low Return,
Low Importance</bfg:label>
<bfg:label x="9.97" y="0.45" align="right" textcolor="#000000">Low Return,
High Importance</bfg:label>
<bfg:label x="0.10" y="9.95" align="left top" textcolor="#000000">High Return,
Low Importance</bfg:label>
<bfg:label x="9.97" y="9.95" align="right top" textcolor="#000000">High Return,
High Importance</bfg:label>
</bfg:bubbleseries>
<bfg:key align="bottom" bordercolor="black">
<bfg:keyitem series="Project A1"/>
<bfg:keyitem series="Project A2"/>
<bfg:keyitem series="Project B"/>
<bfg:keyitem series="Project C"/>
<bfg:keyitem series="Project D"/>
<bfg:keyitem series="Project E"/>
<bfg:keyitem series="Project F"/>
<bfg:keyitem marker="line" color="white" bordercolor="white"/>
<bfg:keyitem marker="line" color="#A1BBEE" bordercolor="#A1BBEE">Ahead of Time</bfg:keyitem>
<bfg:keyitem marker="line" color="#5E8109" bordercolor="#5E8109">On Time</bfg:keyitem>
<bfg:keyitem marker="line" color="#FF9900" bordercolor="#FF9900">Over Time</bfg:keyitem>
<bfg:keyitem marker="line" color="#AA0036" bordercolor="#AA0036">On Hold</bfg:keyitem>
</bfg:key>
</bfg:axesgraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300" xrotation="10" yrotation="10" border="0" backwallpaint="#CCCCCC">
<bfg:axis pos="left" type="currency" wallpaint="#CCCCCC"/>
<bfg:barseries name="YourSeries">
<bfg:data x="Apples" y="6" color="red" onmousemove="bfgShowPopup('Apples = 6', event)" onmouseout="bfgHidePopup()" href="javascript:alert('Clicked Apples')"/>
<bfg:data x="Oranges" y="3" color="#FF8C00" onmousemove="bfgShowPopup('Oranges = 3', event)" onmouseout="bfgHidePopup()"/>
<bfg:data x="Bananas" y="8" color="yellow" onmousemove="bfgShowPopup('Bananas = 8', event)" onmouseout="bfgHidePopup()" onclick="alert('Boo!')"/>
<bfg:data x="Plums" y="5" color="#9400D3" onmousemove="bfgShowPopup('Plums = 5', event)" onmouseout="bfgHidePopup()"/>
<bfg:data x="Grapes" y="6" color="green" onmousemove="bfgShowPopup('Grapes = 6', event)" onmouseout="bfgHidePopup()"/>
</bfg:barseries>
</bfg:axesgraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="200">
<bfg:axis pos="left" type="float" zerointersection="true" density="minimal"/>
<bfg:axis pos="bottom" type="float" zerointersection="true"/>
<bfg:functionseries name="Sine" min="-3.1416" max="3.1416" method="java.lang.Math.sin" linethickness="2"/>
<bfg:lineseries name="Approximation" linethickness="2" onmousemove="bfgShowPopup(bfgRound(seriesx,2) +'='+bfgRound(seriesy,2), event)" onmouseout="bfgHidePopup()">
<bfg:data x="-3" y="0"/>
<bfg:data x="-2" y="-0.5"/>
<bfg:data x="-1" y="-0.8"/>
<bfg:data x="1" y="0.8"/>
<bfg:data x="2" y="0.5"/>
<bfg:data x="3" y="0"/>
</bfg:lineseries>
<bfg:key align="bottom" bordercolor="black"/>
</bfg:axesgraph>
functionseries class, which can be used to
plot a linegraph representing a continuous function (rather than sampled data). The actual
function can be any static method which takes a single double and returns a single double -
here we use Math.sin. We've added a rollover to this graph as well.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:piegraph height="300" width="300" yrotation="-30" xrotation="-20" defaultcolors="#FF9900, #FFCCFF, #9900FF, #66CCFF, red, yellow, green">
<bfg:label font="12pt bold Arial" paddingbottom="10">Browser Usage</bfg:label>
<bfg:label font="10pt Arial" paddingbottom="10">(Gecko-based are highlighted)</bfg:label>
<bfg:data key="IE 6" value="62.3%">
<bfg:label>62.3%</bfg:label>
</bfg:data>
<bfg:data key="Firefox" value="23.9%" extend="10%">
<bfg:label>23.9%</bfg:label>
</bfg:data>
<bfg:data key="IE 5" value="3.4%">
<bfg:label distance="1">3.4%</bfg:label>
</bfg:data>
<bfg:data key="Netscape 7" value="0.9%" extend="10%">
<bfg:label distance="1">0.9%</bfg:label>
</bfg:data>
<bfg:data key="Mozilla" value="3.5%" extend="10%">
<bfg:label distance="1.05">3.5%</bfg:label>
</bfg:data>
<bfg:data key="Opera" value="1.9%">
<bfg:label distance="1">1.9%</bfg:label>
</bfg:data>
<bfg:key align="bottom" bordercolor="black"/>
</bfg:piegraph>
extend attribute.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:piegraph height="300" width="300" yrotation="-30" defaultcolors="red, #FF9900, yellow, #9900FF, green">
<bfg:data key="apples" value="30">
<bfg:label distance="1.1">apples (21.0%)</bfg:label>
</bfg:data>
<bfg:data key="oranges" value="40">
<bfg:label distance="1.1">oranges (28.0%)</bfg:label>
</bfg:data>
<bfg:data key="bananas" value="20" extend="10%">
<bfg:label distance="1.3">bananas (14.0%)</bfg:label>
</bfg:data>
<bfg:data key="apricots" value="25">
<bfg:label distance="1.1">apricots (17.4%)</bfg:label>
</bfg:data>
<bfg:data key="watermelon" value="28">
<bfg:label distance="1.1">watermelon (19.6%)</bfg:label>
</bfg:data>
</bfg:piegraph>
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300">
<bfg:axis pos="left" type="int" min="0" max="40"/>
<bfg:axis pos="bottom" type="int" min="0" max="35"/>
<bfg:scatterseries name="Sample Points" type="diamond">
<bfg:data x="19" y="12"/>
<bfg:data x="22" y="35"/>
<bfg:data x="15" y="20"/>
<bfg:data x="16" y="25"/>
<bfg:data x="25" y="29"/>
<bfg:data x="24" y="20"/>
<bfg:data x="18" y="30"/>
<bfg:data x="11" y="18"/>
<bfg:data x="20" y="27"/>
<bfg:line x1="0" y1="3" x2="31" y2="38" linethickness="1" dash="5,4" color="blue" name="best fit"/>
</bfg:scatterseries>
</bfg:axesgraph>
marker
elements to it, or, if you prefer, by using a scatterseries. The effect is identical.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:axesgraph width="300" height="300">
<bfg:axis pos="left" type="log(decimal(0.#E0))"/>
<bfg:axis pos="bottom" type="bar"/>
<bfg:barseries name="extremes" barwidth="80%" color="yellow">
<bfg:data x="A" y="50"/>
<bfg:data x="B" y="5000"/>
<bfg:data x="C" y="500000"/>
<bfg:data x="D" y="50000000"/>
<bfg:data x="E" y="5000000000"/>
<bfg:data x="F" y="500000000000"/>
<bfg:data x="G" y="50000000000000"/>
<bfg:data x="H" y="5000000000000000"/>
<bfg:data x="I" y="500000000000000000"/>
<bfg:data x="J" y="50000000000000000000"/>
<bfg:data x="K" y="5000000000000000000000" color="gradient(yellow,red)"/>
</bfg:barseries>
</bfg:axesgraph>
log(...) around it. This is ideal for displaying values over a very
large range, as we're doing here.
<%@ taglib uri="http://big.faceless.org/products/graph" prefix="bfg" %>
<bfg:dialgraph height="300" width="300">
<bfg:segment startangle="-120" endangle="-80" inner="30" outer="100" color="red"/>
<bfg:segment startangle="-80" endangle="-20" inner="30" outer="100" color="yellow"/>
<bfg:segment startangle="-20" endangle="120" inner="30" outer="100" color="green"/>
<bfg:segment startangle="0" endangle="360" inner="0" outer="10" color="black"/>
<bfg:needle angle="80" waist="50" waistwidth="8" end="80" color="black"/>
<bfg:tick startangle="-120" endangle="120" step="12" inner="100" outer="105" color="black"/>
<bfg:labels startangle="-120" endangle="120" step="12" distance="110" startvalue="0" endvalue="100"/>
</bfg:dialgraph>