I ve a problem with the use of griddata. I have a grid of x,y with value z. the grid have 4500 points I would like to have a rigular grid of 1500 points. I try the function zi = griddata(x,y,z,xi,yi) but I have an error "too many indices". I don't understant why!!! x,y,z,xi and yi are numpy array with 1 column. Sorry for my bad english!!
Thanks Josh Lawrence-2 wrote: > > Greetings all, > > In using the function griddata in mlab.py, I think I have found a bug. > The following line in mlab.py errors for me. > I supply it an xi and yi that have shape (N,1). I have surface data, > but I only care about the variation in one direction. In mlab, when it > gets to this line (2956 in svn revision 7040): > > if min(xo[1:]-xo[0:-1]) < 0 or min(yo[1:]-yo[0:-1]) < 0: > raise ValueError, 'output grid defined by xi,yi must be > monotone increasing' > > the result is an error. That is, I get the following: > > ValueError: min() arg is an empty sequence > > A couple of things. First, if I make my variation in x to be 2 points > (x = 0 for the case I'm interested in--so I just have both values of x > be zero), I do not get this error and I believe the result works. So, > it seems that there should be some handling of the case that there are > only 1 point in either x or y direction. > > Second, is it better to use the builtin python function min, or should > numpy.min be used instead? > > Cheers, > > Josh Lawrence > Ph.D. Student > Clemson University > > > ------------------------------------------------------------------------------ > Stay on top of everything new and different, both inside and > around Java (TM) technology - register by April 22, and save > $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. > 300 plus technical and hands-on sessions. Register today. > Use priority code J9JMT32. http://p.sf.net/sfu/p > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > > -- View this message in context: http://www.nabble.com/Griddata-tp23083610p23929245.html Sent from the matplotlib - users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
