Awesome, thanks Ned! FTR (in case it helps others): Ned's "solution" was, formally, among the first things (if not the first thing) I tried, but...for my RGB table, I was using a colormap salvaged from some previous work in matlab using the scipy sub-package scipy.io.mio. All that data was in floating point in the interval [0,1], which I knew, but by the time I guessed that I probably needed to convert it to [0,255], I think I must've made some other change somewhere else and/or neglected to simultaneously enforce that the m x n x 3 array be numpy.uint8 so that, between those other two problems, the solution to my problem was being "masked". :-( Anyway, thanks again!
DG --- On Sat, 10/4/08, Ned Batchelder <[EMAIL PROTECTED]> wrote: > From: Ned Batchelder <[EMAIL PROTECTED]> > Subject: Re: [Image-SIG] How to create a new RGB image from an mxnx3 numpy > array > To: [EMAIL PROTECTED] > Cc: image-sig@python.org > Date: Saturday, October 4, 2008, 7:59 AM > I use code like this: > > pixels = numpy.zeros((200, 300, 3), dtype=numpy.uint8) > //.. write data into the pixels array .. > im = Image.fromarray(pixels) > > --Ned. > http://nedbatchelder.com > > David Goldsmith wrote: > > Hi! I've been over and over the handbook, tried > everything I could think of, and still can't figure it > out: how the heck does one get an m x n x 3 numpy array > interpreted as an RGB image? I tried fromarray, both with > the whole array, and trying to merge the three images > resulting from fromarray-ing the three m x n sub-arrays, > creating the image first and then using putdata in various > ways, etc., etc. Please help. Thanks. > > > > DG > > > > PS: Also, more discussion of the Palette concept in > the handbook would be nice (e.g., what's its relation, > if any, to the concept of colormaps, as used, e.g., in > matlab and matplotlib). Thanks again. > > > > > > > > _______________________________________________ > > Image-SIG maillist - Image-SIG@python.org > > http://mail.python.org/mailman/listinfo/image-sig > > > > > > > > > > -- > Ned Batchelder, http://nedbatchelder.com _______________________________________________ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig
