[SciPy-user] Adding new columns to 2D array & populating them
Fri Jun 6 12:49:23 CDT 2008
The short answer is: they do not appear to be exactly the same.
The longer answer (there are may who will know this way better than I do),
can be found if you look at the source code in :
and then open file
You will find the concatenator class that does a whole bunch of things, and
then r_class and c_class which inherit concatenator. c_ and r_ are just
"attached" to those classes.
2008/6/6 Tim Gray <email@example.com>:
> So what is the difference between the c_ operator and hstack? Or r_ and
> vstack? I'm not too clear on the c_ and r_ operators. Is there an
> efficiency gain related to using them? Do the do something special?
> SciPy-user mailing list
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