Ed Schofield <schofield <at> ftw.at> writes: > > > On 08/07/2006, at 10:22 PM, JJ wrote: > > > 3) In some operations, especially range selection operations, a N, > > 1 matrix is > > turned into a 1,N matrix. This is confusing relative to matlab and > > problematic, > > in my view. > > This sounds like a bug. Can you give any examples of this happening > with the latest release or SVN version? > > > <snip> > > > > 5) If X is a 1,n matrix, then X.T should return a n,1 matrix, I > > think. > > This should be the case. Could you post a code snippet that violates > it? > > Thanks for your feedback, JJ! >-------------------------------------------------- Hi Ed: Here are a couple more items: c = cov(a) # a is a matrix type(c) # should be a matrix <type 'numpy.ndarray'>
Also, if a is 5x2, then cov(a) is 5,5. Is that just a convention? I would expect the cov to be 2,2, as in matlab. It means I have to use more transpose methods. D is a 1,n matrix (D<2).nonzero()[0] As per my earlier comment on which(), I wish that .nonzero() did not return a tupple. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
