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Question: static plots in JSP

Question:static plots in JSP

Karel Srot 216 Maple Toolboxes
convert
November 26 2007
0
Hello, I am trying to draw a static plot in JSP (without java needed on client ). I am sure that the command is OK, I wrote it according the example in manual.
<maple:statement type="plot" height="200" width="400">plot(x*x,x=-1..1,y=0..1)</maple:statement>
But this error appears in browser:
MapleNet JSP Error Error in maple:statement (Reference # 1196078978052) cannot_convert_results Please try again.
I looked into logs and there is an error:
... 2007-11-26 13:09:37 StandardContext[/maplenet][org.apache.jasper.runtime.PageContextImpl@6e82254d] maple: statement: to Maple -plot(x*x,x=-1..1, y=0..1) 2007-11-26 13:09:38 StandardContext[/maplenet][org.apache.jasper.runtime.PageContextImpl@6e82254d] maple: statement: from Maple - length=1 2007-11-26 13:09:38 StandardContext[/maplenet][org.apache.jasper.runtime.PageContextImpl@6e82254d] maple: statement: result[0]=sun.awt.image.Tool kitImage@145d424 2007-11-26 13:09:38 StandardContext[/maplenet][org.apache.jasper.runtime.PageContextImpl@6e82254d] maple: maple:statement exception[1196078978052 ]=cannot_convert_results 2007-11-26 13:09:38 StandardContext[/maplenet][org.apache.jasper.runtime.PageContextImpl@6e82254d] maple: statement: removing maple 2007-11-26 13:09:38 StandardContext[/maplenet][org.apache.jasper.runtime.PageContextImpl@6e82254d] maple: statement: Releasing Maple Bean (com.ma plesoft.maplenet.jsp.maple.MapleInterpreterBean@1a15cd9a) 2007-11-26 13:09:38 StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception java.lang.Throwable: Error in maple:statement (Reference # 1196078978052) at com.maplesoft.maplenet.jsp.tagext.MapleWebBodyTagSupport.doCatch(Unknown Source) at org.apache.jsp.xsrot.latexconv.testlatex_002dplot_jsp._jspx_meth_maple_statement_1(testlatex_002dplot_jsp.java:296) at org.apache.jsp.xsrot.latexconv.testlatex_002dplot_jsp._jspService(testlatex_002dplot_jsp.java:168) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) ...
It seems that an error appears when converting the plot to JPEG using sun.awt.image.ToolkitImage. Does anyone have the same problem and knows how to fix it? Thank you.
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