2011/7/28 Neilen Marais <[email protected]>: > Hi, > > I would like to read some of the variable values that I set in my .geo > file into another (python) program. My program needs certain > coordinates (such as where the source is located) that depends on > variables defined in the .geo file. Is there a simple way of > extracting the values of those variables from gmsh? I'd be happy to > run gmsh and read values from stdout if neccesary.
There's the Printf command with the syntax Printf ( char-expression , expression-list ) > char-expression; http://geuz.org/gmsh/doc/texinfo/gmsh.html#General-commands So calling the attached lc.geo from the shell with gmsh - lc.geo you get the attached lc.py which I think is valid Python. Another approach to this kind of problem (i.e. sharing parameter values between Gmsh and other programs) is to generate the .geo input file from a template by macro substitution. That is, have a file lc.geo.in with placeholders in it, run that through a macro-processor like m4 <http://www.gnu.org/s/m4>, PYM <http://ray.cg.tuwien.ac.at/rft/Papers/PYM/pym.html>, or use the template string substitution from Python's standard library <http://docs.python.org/library/string.html?highlight=template#string.Template.substitute>.
lc.geo
Description: Binary data
lc = 0.1
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