Convert a libigl DMAT to a Matlab .mat file.

DMAT2MATLAB.py

#!/usr/bin/python

# Convert a libigl DMAT to a Matlab .mat file.
# Author: Yotam Gingold <yotam (strudel) yotamgingold.com>
# License: Public Domain [CC0](http://creativecommons.org/publicdomain/zero/1.0/)
# On GitHub as a gist: https://gist.github.com/yig/0fb7fe73b2ce914c4b1d6de3b4e4ba01

from __future__ import print_function, division

from numpy import *
import scipy.io
import sys

def load_DMAT( path ):
    from numpy import zeros
    
    with open( path ) as f:
        
        for i, line in enumerate( f ):
            if i == 0:
                dims = list( map( int, line.strip().split() ) )
                M = zeros( prod( dims ) )
            
            else:
                M[i-1] = float( line )
    
    M = M.reshape( dims )
    
    return M

if len( sys.argv ) != 3:
    print( 'Usage:', sys.argv[0], 'path/to/input.DMAT path/to/output.mat [matlab_variable_name]', file = sys.stderr )
    sys.exit(-1)

argv = list( sys.argv[1:] )
inpath = argv.pop(0)
outpath = argv.pop(0)

matlab_variable_name = 'X'
if len( argv ) > 0:
    matlab_variable_name = argv.pop(0)

assert len( argv ) == 0

print( "Loading:", inpath )
X = load_DMAT( inpath )
print( "Loaded:", inpath )
print( "Saving:", outpath )
scipy.io.savemat( outpath, { matlab_variable_name: X } )
print( "Saved:", outpath )