[Pymat-users] Adding engOutputBuffer

[Koen V. <ko...@ph...>]

Hi,

Recently, I tried to call Matlab from C, and started with the examples
provided by MathWorks. This wasn't a problem, so I moved to Python.
After spending some time trying to install PyMat, I got it to work as
well, but the Python equivalent of engOutputBuffer was missing. So,
since I never did any Python<->C programming and I'm always looking for
new things to try, I decided to add it.
I tried to copy the style in pymat.cpp. I'm not sure the thing is
correct in any way (should I do Py_INCREF(Pbuf)? I don't know...), but
it seemed to work when I tested it. See the attached file for the diff.
Again, note that I did this just to see if I could and it might not be
useful to anyone. But if you have any comments, I'd be happy to hear
them.

As a quick example, try to run:

import pymat
import array

h=pymat.open()
buf=array.array('c',250*['*'])
print buf
pymat.outputbuffer(h,buf)
pymat.eval(h,'a=1+1+1')
print buf
s=buf.tostring()
print s[0:s.find('\0')]
pymat.eval(h,'b=a^2')
s=buf.tostring()
print s[0:s.find('\0')]
pymat.outputbuffer(h,None)
pymat.eval(h,'c=b-a')
s=buf.tostring()
print s[0:s.find('\0')]
pymat.close(h)


Koen