Plotting into XML pages

[Stephen Jeffrey]

Hi,

I have a CGI script that uses GnuPlot to
dynamically graph data. It works when the
page calling the CGI script is HTML, but
not XML.

Does anyone have any example code that
shows how to plot data using gnuplot
into an XML page?

The following fragment works when graphing
to HTML:

----------------------------------------------------------------
$GNUPLOT = '/usr/bin/gnuplot';

$|=1; # Prevent buffering problems
print "Content-type: image/png\n\n"; # required header

open (GRAPH,"| $GNUPLOT") || die;
print GRAPH <<END;
set term png color small
set output
plot sin(x)
END

close GRAPH;

 

[Brian McCauley]

I have a CGI script that uses GnuPlot to
dynamically graph data. It works when the
page calling the CGI script is HTML, but
not XML.

I do not think your problem has anything to do with Perl (or CGI). To
help partition your problem try putting a static image/png entity into
your XML.