Re: [Numpy-discussion] histogram help
Sorry but I don't understand your last question. Better / more efficient than what? -=- Olivier Le 2 février 2012 07:14, Ruby Stevenson a écrit : > Exactly, histogram of Z, which itself is an array, for each (x, y). > > sorry for getting everyone including myself confused :-) > > I think I am now using histogram call correctly ... but I now have a > slightly different question. It maybe better to ask in a different > subject, but here it is any way: > > support I will have a sequence of (x, y), and Z, with x, y are > coordinates, and Z being an array for third dimension, Is there a > better or more efficient way to build up this 3-D array? > > thanks > > Ruby > > > > > > > On Tue, Jan 31, 2012 at 4:42 AM, Nadav Horesh > wrote: > > Do you want a histogramm of z for each (x,y) ? > > > > Nadav > > > > > > From: numpy-discussion-boun...@scipy.org [ > numpy-discussion-boun...@scipy.org] On Behalf Of Ruby Stevenson [ > ruby...@gmail.com] > > Sent: 30 January 2012 21:27 > > To: Discussion of Numerical Python > > Subject: Re: [Numpy-discussion] histogram help > > > > Sorry, I realize I didn't describe the problem completely clear or > correct. > > > > the (x,y) in this case is just many co-ordinates, and each coordinate > > has a list of values (Z value) associated with it. The bins are > > allocated for the Z. > > > > I hope this clarify things a little. Thanks again. > > > > Ruby > > > > > > > > > > On Mon, Jan 30, 2012 at 2:21 PM, Ruby Stevenson > wrote: > >> hi, all > >> > >> I am trying to figure out how to do histogram with numpy > >> > >> I have a three-dimension array A[x,y,z], another array (bins) has > >> been allocated along Z dimension, z' > >> > >> how can I get the histogram of H[ x, y, z' ]? > >> > >> thanks for your help. > >> > >> Ruby > > ___ > > NumPy-Discussion mailing list > > NumPy-Discussion@scipy.org > > http://mail.scipy.org/mailman/listinfo/numpy-discussion > > ___ > > NumPy-Discussion mailing list > > NumPy-Discussion@scipy.org > > http://mail.scipy.org/mailman/listinfo/numpy-discussion > ___ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] histogram help
Exactly, histogram of Z, which itself is an array, for each (x, y). sorry for getting everyone including myself confused :-) I think I am now using histogram call correctly ... but I now have a slightly different question. It maybe better to ask in a different subject, but here it is any way: support I will have a sequence of (x, y), and Z, with x, y are coordinates, and Z being an array for third dimension, Is there a better or more efficient way to build up this 3-D array? thanks Ruby On Tue, Jan 31, 2012 at 4:42 AM, Nadav Horesh wrote: > Do you want a histogramm of z for each (x,y) ? > > Nadav > > > From: numpy-discussion-boun...@scipy.org [numpy-discussion-boun...@scipy.org] > On Behalf Of Ruby Stevenson [ruby...@gmail.com] > Sent: 30 January 2012 21:27 > To: Discussion of Numerical Python > Subject: Re: [Numpy-discussion] histogram help > > Sorry, I realize I didn't describe the problem completely clear or correct. > > the (x,y) in this case is just many co-ordinates, and each coordinate > has a list of values (Z value) associated with it. The bins are > allocated for the Z. > > I hope this clarify things a little. Thanks again. > > Ruby > > > > > On Mon, Jan 30, 2012 at 2:21 PM, Ruby Stevenson wrote: >> hi, all >> >> I am trying to figure out how to do histogram with numpy >> >> I have a three-dimension array A[x,y,z], another array (bins) has >> been allocated along Z dimension, z' >> >> how can I get the histogram of H[ x, y, z' ]? >> >> thanks for your help. >> >> Ruby > ___ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > ___ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] histogram help
Do you want a histogramm of z for each (x,y) ? Nadav From: numpy-discussion-boun...@scipy.org [numpy-discussion-boun...@scipy.org] On Behalf Of Ruby Stevenson [ruby...@gmail.com] Sent: 30 January 2012 21:27 To: Discussion of Numerical Python Subject: Re: [Numpy-discussion] histogram help Sorry, I realize I didn't describe the problem completely clear or correct. the (x,y) in this case is just many co-ordinates, and each coordinate has a list of values (Z value) associated with it. The bins are allocated for the Z. I hope this clarify things a little. Thanks again. Ruby On Mon, Jan 30, 2012 at 2:21 PM, Ruby Stevenson wrote: > hi, all > > I am trying to figure out how to do histogram with numpy > > I have a three-dimension array A[x,y,z], another array (bins) has > been allocated along Z dimension, z' > > how can I get the histogram of H[ x, y, z' ]? > > thanks for your help. > > Ruby ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] histogram help
Hi Ruby, I still do not fully understand your question but what I do in such cases is to construct a very simple array and test the functions. The help of numpy.histogram2d or numpy.histogramdd (for more than two dims) might help here. So I guess, basically you want to ignore the x,y positions and just look at the combined distribution of the Z values? In this case, you would just need the numpy.histogram (the 1d version). Note that the histogram returns the numbers and the bin-borders. bests Samuel On 30.01.2012, at 20:27, Ruby Stevenson wrote: > Sorry, I realize I didn't describe the problem completely clear or correct. > > the (x,y) in this case is just many co-ordinates, and each coordinate > has a list of values (Z value) associated with it. The bins are > allocated for the Z. > > I hope this clarify things a little. Thanks again. > > Ruby > > > > > On Mon, Jan 30, 2012 at 2:21 PM, Ruby Stevenson wrote: >> hi, all >> >> I am trying to figure out how to do histogram with numpy >> >> I have a three-dimension array A[x,y,z], another array (bins) has >> been allocated along Z dimension, z' >> >> how can I get the histogram of H[ x, y, z' ]? >> >> thanks for your help. >> >> Ruby > ___ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] histogram help
Sorry, I realize I didn't describe the problem completely clear or correct. the (x,y) in this case is just many co-ordinates, and each coordinate has a list of values (Z value) associated with it. The bins are allocated for the Z. I hope this clarify things a little. Thanks again. Ruby On Mon, Jan 30, 2012 at 2:21 PM, Ruby Stevenson wrote: > hi, all > > I am trying to figure out how to do histogram with numpy > > I have a three-dimension array A[x,y,z], another array (bins) has > been allocated along Z dimension, z' > > how can I get the histogram of H[ x, y, z' ]? > > thanks for your help. > > Ruby ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
