Re: [Numpy-discussion] Fancy indexing with masks
2011/9/20 Stéfan van der Walt ste...@sun.ac.za On Tue, Sep 20, 2011 at 12:43 AM, Robert Kern robert.k...@gmail.com wrote: If the array is short in a dimension, it gets implicitly continued with Falses. You can see this in one dimension: [...] I honestly don't know if this is documented or tested anywhere or even if this existed in older versions. The behaviour is already present in 1.4, so I guess it's too late to insert a shape check now? There already is a shape check present in the development version[1]: a = np.arange(10) b = np.array([False, True, False]) a[b] Traceback (most recent call last): File stdin, line 1, in module ValueError: operands could not be broadcast together with shapes (10) (3) But it does not seem to work on multidimensional arrays: c = np.arange(12).reshape((4,3)) c[b] array([[3, 4, 5]]) I also noticed that it does strange things when using a list: c[[True, False, True]] array([[3, 4, 5], [0, 1, 2], [3, 4, 5]]) Regards, Han [1] See also: http://mail.scipy.org/pipermail/numpy-discussion/2011-July/057870.html ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Fancy indexing with masks
Thu, 22 Sep 2011 08:12:12 +0200, Han Genuit wrote: [clip] I also noticed that it does strange things when using a list: c[[True, False, True]] array([[3, 4, 5], [0, 1, 2], [3, 4, 5]]) It casts the list with booleans to an integer array. Probably shouldn't work like that... Pauli ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
[Numpy-discussion] ImportError: libptf77blas.so.3: cannot open shared object file: No such file or directory
Dear all, Maybe someone has experienced this problem before. I was able to build and install numpy in a seperate python 2.7 folder on our cluster. When I try to import numpy I get the following error: $ /software/Python-2.7.2/bin/python -c 'import numpy; numpy.test()' Traceback (most recent call last): File string, line 1, in module File /illumina/software/Python-2.7.2/lib/python2.7/site-packages/numpy/__init__.py, line 137, in module import add_newdocs File /illumina/software/Python-2.7.2/lib/python2.7/site-packages/numpy/add_newdocs.py, line 9, in module from numpy.lib import add_newdoc File /illumina/software/Python-2.7.2/lib/python2.7/site-packages/numpy/lib/__init__.py, line 13, in module from polynomial import * File /illumina/software/Python-2.7.2/lib/python2.7/site-packages/numpy/lib/polynomial.py, line 17, in module from numpy.linalg import eigvals, lstsq File /illumina/software/Python-2.7.2/lib/python2.7/site-packages/numpy/linalg/__init__.py, line 48, in module from linalg import * File /illumina/software/Python-2.7.2/lib/python2.7/site-packages/numpy/linalg/linalg.py, line 23, in module from numpy.linalg import lapack_lite ImportError: libptf77blas.so.3: cannot open shared object file: No such file or directory In the __config.py file the folder where libptf77 should be is present. Any suggestions? Regards, Marijn ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] ImportError: libptf77blas.so.3: cannot open shared object file: No such file or directory
Hi, Thu, 22 Sep 2011 13:09:51 +0200, Marijn Verkerk wrote: [clip] ImportError: libptf77blas.so.3: cannot open shared object file: No such file or directory In the __config.py file the folder where libptf77 should be is present. Any suggestions? You need to make the dynamic linker able to find this file, e.g., by setting the LD_LIBRARY_PATH environment variable to a correct value. Test with ldd lapack_lite.so (The stuff in __config.py is unrelated.) ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
[Numpy-discussion] Debug memory block at address p=0x2ba5928: API 'm'
Hello, I'm running tests for numpy 1.6.1 on 2.7 -dbg flavor and I got this: .Debug memory block at address p=0x2ba5928: API 'm' 8 bytes originally requested The 7 pad bytes at p-7 are FORBIDDENBYTE, as expected. The 8 pad bytes at tail=0x2ba5930 are FORBIDDENBYTE, as expected. The block was made by call #1253108 to debug malloc/realloc. Data at p: a3 03 00 00 00 00 00 00 Fatal Python error: bad ID: Allocated using API 'm', verified using API 'o' Running unit tests for numpy NumPy version 1.6.1 and it got aborted. Running the tests with 2.6-dbg doesn't show this behavior. How can I help you debug it? Cheers, -- Sandro Tosi (aka morph, morpheus, matrixhasu) My website: http://matrixhasu.altervista.org/ Me at Debian: http://wiki.debian.org/SandroTosi ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Debug memory block at address p=0x2ba5928: API 'm'
On 09/22/2011 02:44 PM, Sandro Tosi wrote: Hello, I'm running tests for numpy 1.6.1 on 2.7 -dbg flavor and I got this: .Debug memory block at address p=0x2ba5928: API 'm' 8 bytes originally requested The 7 pad bytes at p-7 are FORBIDDENBYTE, as expected. The 8 pad bytes at tail=0x2ba5930 are FORBIDDENBYTE, as expected. The block was made by call #1253108 to debug malloc/realloc. Data at p: a3 03 00 00 00 00 00 00 Fatal Python error: bad ID: Allocated using API 'm', verified using API 'o' Running unit tests for numpy NumPy version 1.6.1 and it got aborted. Running the tests with 2.6-dbg doesn't show this behavior. How can I help you debug it? Cheers, All that I can tell you is that this is Ticket 1578: http://projects.scipy.org/numpy/ticket/1578 Bruce ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
Re: [Numpy-discussion] Debug memory block at address p=0x2ba5928: API 'm'
On Thu, Sep 22, 2011 at 21:49, Bruce Southey bsout...@gmail.com wrote: All that I can tell you is that this is Ticket 1578: http://projects.scipy.org/numpy/ticket/1578 Ah, I could have probably checked it before sending this email, but now that webpage gives me 500 - it's spreading! :) -- Sandro Tosi (aka morph, morpheus, matrixhasu) My website: http://matrixhasu.altervista.org/ Me at Debian: http://wiki.debian.org/SandroTosi ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
