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<TITLE>Modules and Plug-ins in SciGraphica: Introduction to the SciGraphica plug-in system</TITLE>
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<H2><A NAME="s1">1. Introduction to the SciGraphica plug-in system</A></H2>
<P>Like many other modern programs, SciGraphica can be extended
by third-party plug-ins. Theseplug-ins can currently be written both
in Python and C. The easiest way to wite a plug-in, is to write a
Python module, in C or Python. In that case the plug-in is loaded
by the Python module loader.
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<P>Modules can be imported from the SciGraphica terminal command
line, or by including the module name in the list of modules in the
Scripting->Configuration->Startup dialog. Make sure the module
can be found in the Python module search path, which can be determined
by doing the follwing in the SciGraphica terminal:
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<PRE>
import sys
print sys
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<P>One of these paths is set by SciGraphica, which is <CODE>/usr/share/scigraphica/python</CODE>
if the package is installed under <CODE>/usr</CODE>. The rest of this document
will describe how to write plug-ins in Python and C.
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