I am doing this with 20+ charts/graphs and FOP. I used jfreechart. My servlet would construct a jfreechart object based upon request parameters based to it. jfreechart allows you to export the java2d object as png, jpg, svg, etc.
I merely include the URL in my FO document as an external graphic. The URL is to my servlet with all the request parameters needed to generate the chart. Hope that gives you an idea. To be honest, I had to give up on using the SVG as a format for my charts. While the image quality is much sharper than png, I found it problematic to use with my document. --- [EMAIL PROTECTED] wrote: > > hi derrick, > thanks alot for your answer... > > I just tried your code, > and I got this exception : > > javax.xml.transform.TransformerException: Prefix > must resolve to a > namespace: math > > hope you can help me more > > > sandy > > > We use SVG to generate our Pie Charts and our bar > charts. It's not too hard > to create. I looked at the code from this site and > started creating my own > variations for testing. > http://www.svgopen.org/2003/papers/CreatingSVGPieChartsThroughWebService > Here is a Pie Chart that I tested with: > <fo:table-cell > xsl:use-attribute-sets="table-piechart-style"> > <xsl:variable name="number" > select="operatingaverages/monthly/efficiency" /> > <xsl:variable > name="difference" select="100 - $number" /> > <xsl:variable > name="currentAngle" select="math:toRadians(($number > div 100) * 360.0)" /> > <xsl:variable name="halfAngle" > select="math:toRadians((($number div 2) div > $total) * 360.0)" /> <xsl:variable name="rotation" > select="270 + (360.0 * > ($number div 100))" /> <xsl:variable name="x1" > select="math:cos($halfAngle) > * 70" /> <xsl:variable name="y1" > select="math:sin($halfAngle) * 70" /> > <xsl:variable name="cosTheta" > select="math:cos(math:toRadians($rotation))" > /> <xsl:variable name="sinTheta" > select="math:sin(math:toRadians($rotation))" /> > <fo:instream-foreign-object> > <svg height="100" viewBox="0 0 200 100" width="200" > xmlns="http://www.w3.org/2000/svg"; > xmlns:xlink="http://www.w3.org/1999/xlink";> <g> > <path > style="fill:{$color1};stroke:black;stroke-width:1;fillrule:evenodd; > stroke-linejoin:bevel;"> <xsl:attribute > name="transform"> > <xsl:text>translate(100,50)</xsl:text> > <xsl:text>rotate(</xsl:text> > <xsl:value-of select="$rotation" /> > <xsl:text>)</xsl:text> </xsl:attribute> > <xsl:attribute name="d"> <xsl:text>M 50 0 A 50 50 0 > </xsl:text> <xsl:choose> > <xsl:when test="$currentAngle > 3.14"> <xsl:text>1 > </xsl:text> </xsl:when> > <xsl:otherwise> <xsl:text>0 </xsl:text> > </xsl:otherwise> </xsl:choose> > <xsl:text>1 </xsl:text> <xsl:value-of > select="math:cos($currentAngle) * 50" > /> <xsl:text> </xsl:text> <xsl:value-of > select="math:sin($currentAngle) * > 50" /> <xsl:text> L 0 0 Z</xsl:text> > </xsl:attribute> </path> </g> </svg> > </fo:instream-foreign-object> </fo:table-cell> > Derrick Shoemake > > > "Die vorstehend ge�u�erte Meinung gibt nur die > Auffassung des Autors wieder > und darf nicht als Hinweis auf die Meinung der > Commerzbank AG oder einer > ihrer Tochtergesellschaften verstanden oder > ausgelegt werden." > > "those managing expressed opinion shows only the > view of the author > and may not not as reference to the opinion of the > Commerzbank AG or > one of their subsidiaries be understood or laid > out." > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
