Example: Chart Functions
The example XSLT document below shows how Altova extension functions for charts can be used. Given further below are an XML document and a screenshot of the output image generated when the XML document is processed with the XSLT document using the XSLT 2.0 Engine.
| Note: | Chart functions are supported only in the Enterprise and Server Editions of Altova products. |
| Note: | For more information about how chart data tables are created, see the documentation of Altova's XMLSpy and StyleVision products. |
XSLT document
This XSLT document (listing below) uses Altova chart extension functions to generate a pie chart. It can be used to process the XML document listed further below.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:altovaext="http://www.altova.com/xslt-extensions"
exclude-result-prefixes="#all">
<xsl:output version="4.0" method="html" indent="yes" encoding="UTF-8"/>
<xsl:template match="/">
<html>
<head>
<title>
<xsl:text>HTML Page with Embedded Chart</xsl:text>
</title>
</head>
<body>
<xsl:for-each select="/Data/Region[1]">
<xsl:variable name="extChartConfig" as="item()*">
<xsl:variable name="ext-chart-settings" as="item()*">
<chart-config>
<General
SettingsVersion="1"
ChartKind="Pie3d"
BKColor="#ffffff"
ShowBorder="1"
PlotBorderColor="#000000"
PlotBKColor="#ffffff"
Title="{@id}"
ShowLegend="1"
OutsideMargin="3.2%"
TitleToPlotMargin="3.%"
LegendToPlotMargin="6.%"
>
<TitleFont
Color="#023d7d"
Name="Tahoma"
Bold="1"
Italic="0"
Underline="0"
MinFontHeight="10.pt"
Size="8.%" />
</General>
</chart-config>
</xsl:variable>
<xsl:sequence select="altovaext:create-chart-config-from-xml( $ext-chart-settings )"/>
</xsl:variable>
<xsl:variable name="chartDataSeries" as="item()*">
<xsl:variable name="chartDataRows" as="item()*">
<xsl:for-each select="(Year)">
<xsl:sequence select="altovaext:create-chart-data-row( (@id), ( .) )"/>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="chartDataSeriesNames" as="xs:string*" select=" ( ("Series 1"), '' )[1]"/>
<xsl:sequence
select="altovaext:create-chart-data-series-from-rows( $chartDataSeriesNames, $chartDataRows)"/>
</xsl:variable>
<xsl:variable name="ChartObj" select="altovaext:create-chart( $extChartConfig, ( $chartDataSeries), false() )"/>
<xsl:variable name="sChartFileName" select="'mychart1.png'"/>
<img src="{$sChartFileName, altovaext:save-chart-image( $ChartObj, $sChartFileName, 400, 400 ) }"/>
</xsl:for-each>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
XML document
This XML document can be processed with the XSLT document above. Data in the XML document is used to generate the pie chart shown in the screenshot below.
<?xml version="1.0" encoding="UTF-8"?>
<Data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="YearlySales.xsd">
<ChartType>Pie Chart 2D</ChartType>
<Region id="Americas">
<Year id="2005">30000</Year>
<Year id="2006">90000</Year>
<Year id="2007">120000</Year>
<Year id="2008">180000</Year>
<Year id="2009">140000</Year>
<Year id="2010">100000</Year>
</Region>
<Region id="Europe">
<Year id="2005">50000</Year>
<Year id="2006">60000</Year>
<Year id="2007">80000</Year>
<Year id="2008">100000</Year>
<Year id="2009">95000</Year>
<Year id="2010">80000</Year>
</Region>
<Region id="Asia">
<Year id="2005">10000</Year>
<Year id="2006">25000</Year>
<Year id="2007">70000</Year>
<Year id="2008">110000</Year>
<Year id="2009">125000</Year>
<Year id="2010">150000</Year>
</Region>
</Data>
Output image
The pie chart show below is generated when the XML document listed above is processed with the XSLT document.
