Hi all, I didn't get any answers to this email. Is it because the proposed addition to numpy is not of any interest to anybody apart from me ? Maybe the way I introduced this is wrong. Please tell me what is wrong with this proposition.
Regards, Gaël On Fri, Oct 20, 2006 at 01:28:52PM +0200, Gael Varoquaux wrote: > Hi, > There is an operation I do a lot, I would call it "unrolling" a array. > The best way to describe it is probably to give the code: > def unroll(M): > """ Flattens the array M and returns a 2D array with the first columns > being the indices of M, and the last column the flatten M. > """ > return hstack((indices(M.shape).reshape(-1,M.ndim),M.reshape(-1,1))) > Example: > >>> M > array([[ 0.73530097, 0.3553424 , 0.3719772 ], > [ 0.83353373, 0.74622133, 0.14748905], > [ 0.72023762, 0.32306969, 0.19142366]]) > >>> unroll(M) > array([[ 0. , 0. , 0.73530097], > [ 0. , 1. , 0.3553424 ], > [ 1. , 1. , 0.3719772 ], > [ 2. , 2. , 0.83353373], > [ 2. , 0. , 0.74622133], > [ 1. , 2. , 0.14748905], > [ 0. , 1. , 0.72023762], > [ 2. , 0. , 0.32306969], > [ 1. , 2. , 0.19142366]]) > The docstring sucks. The function is trivial (when you know numpy a bit). > Maybe this function already exists in numpy, if so I couldn't find it. > Elsewhere I propose it for inclusion. > Cheers, > Gaël > ------------------------------------------------------------------------- > 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 ------------------------------------------------------------------------- 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
