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DESCRIPTIONNotes on executing ploticus under the control of another program in an automated way.STRATEGYAs of version 2.00, pl can be directly invoked as a CGI program A perl script which implements a web interface to ploticus was contributed by Tom McClure. Since it is a command-line program, ploticus can easily be invoked by other programs automatically for unattended use. For instance, web server CGI scripts can invoke pl to build PNG or GIF data displays on demand. Or pl may be invoked by cron to produce plots on a regular basis. The invoking program can build a ploticus script on the fly, or use one that has been created in advance. The actual invocation can be done using the equivalent of system(). For example, in C:
VARIABLESVariables may be useful for implementation of changeable paramters (the invoking program would execute pl and set variables on the command line). For example:
pl -gif status.p STARTDATE=010198 ENDDATE=062699 GROUP=hgc
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![]() data display engine Copyright Steve Grubb ![]() |
Ploticus is hosted at http://ploticus.sourceforge.net |
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