Re: [Numpy-discussion] Problem with concatenate and object arrays
Matthew Brett wrote: Hi, This is a result of PyArray_FromAny changing when object arrays are explicitly requested (which they are in this case --- although behind the scenes). Hmm - I think I am hitting a related bug/feature/surprising change in behavior, which is showing up rather obscurely in a failure of the scipy.io matlab loading tests: http://projects.scipy.org/scipy/scipy/ticket/258 Here's the change I wasn't expecting, present with current SVN: a = arange(2) b = arange(1) c = array([a, b], dtype=object) c - array([[0, 1], [0, 0]], dtype=object) On a previous version of numpy (1.02b.dev2975) I get the answer I was expecting: array([[0], [0 1]], dtype=object) Grrr..Object arrays are very hard to get right. I have no idea why this is happening, but I'll look into it. I think it's the bug that led me to put in the special-case object-array handling in the first place. Now, that special-case object-array handling is only done on an error condition, I need to fix this right and raise an inconsistent shape error. It will probably help with the TypeError messages that are currently raised in this situation with other types as well. -Travis - 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=lnkkid=120709bid=263057dat=121642 ___ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
Re: [Numpy-discussion] order keyword
Charles R Harris wrote: I am trying to write more document strings for numpy and have a question about the order keyword in tostring. The usual allowed values of this keyword are C, F, or None, but in the tostring method there is also the value Any which has the same effect as None. I wonder if the Any shouldn't be removed as None seems to be the preferred form in other methods. I don't think keeping 'Any' as a keyword here is a problem. Also, the default value of order in the tostring method is C and it seems to me that the principal of least surprise requires None as the default so that the order of the array being converted is the default. I've thought this through several times. There may be a few cases where 'Any' is appropriate but the user will be expecting 'C' as the default because that was the only possibility for a long time. It's actually very problematic to switch to 'Any' as the default. You end up with lots of surprises as things start behaving very differently then they used to under Numeric once you transpose the array. -Travis - 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=lnkkid=120709bid=263057dat=121642 ___ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
[Numpy-discussion] (no subject)
Hey guys I posted this on matplotlibs mailing list hey guys i got the subversion from the site and I am trying to install it on windows. I changed dir into the matplotlib dir that includes the setup.py file. run python setup.py install, and im getting a wierd error. i left the topmost lines along with the error. has anyone seen anything like this before? building 'matplotlib.enthought.traits.ctraits' extension creating build\temp.win32-2.4\Release\lib creating build\temp.win32-2.4\Release\lib\matplotlib creating build\temp.win32-2.4\Release\lib\matplotlib\enthought creating build\temp.win32-2.4\Release\lib\matplotlib\enthought\traits C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /nologo /Ox /MD /W3 /GX /DNDEBUG -Ic:\Python24\include -Ic:\Python24\PC /Tclib/matplotlib/e nthought/traits/ctraits.c /Fobuild\temp.win32-2.4\Release\lib/matplotlib/enthoug ht/traits/ctraits.obj C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\link.exe /DLL /nologo /INCREMENTAL:NO /LIBPATH:c:\Python24\libs /LIBPATH:c:\Python24\PCBuild /EXPORT: initctraits build\temp.win32-2.4\Release\lib/matplotlib/enthought/traits/ctraits .obj /OUT:build\lib.win32-2.4\matplotlib\enthought\traits\ctraits.pyd /IMPLIB:bu ild\temp.win32-2.4\Release\lib/matplotlib/enthought/traits\ctraits.lib building 'matplotlib.backends._tkagg' extension C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /nologo /Ox /MD /W3 /GX /DNDEBUG -Iwin32_static/include/tcl84 -I. -Isrc -Iswig -Iagg23/incl ude -I. -I. -Iwin32_static/include/tcl84\freetype2 -I.\freetype2 -Isrc\freetype2 -Iswig\freetype2 -Iagg23/include\freetype2 -I.\freetype2 -I.\freetype2 -Ic:\Pyt hon24\include -Ic:\Python24\PC /Tpsrc/_tkagg.cpp /Fobuild\temp.win32-2.4\Release \src/_tkagg.obj _tkagg.cpp src\_tkagg.cpp(28) : fatal error C1083: Cannot open include file: 'tk.h': No suc h file or directory error: Command C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.e xe /c /nologo /Ox /MD /W3 /GX /DNDEBUG -Iwin32_static/include/tcl84 -I. -Isrc - Iswig -Iagg23/include -I. -I. -Iwin32_static/include/tcl84\freetype2 -I.\freetyp e2 -Isrc\freetype2 -Iswig\freetype2 -Iagg23/include\freetype2 -I.\freetype2 -I.\ freetype2 -Ic:\Python24\include -Ic:\Python24\PC /Tpsrc/_tkagg.cpp /Fobuild\temp .win32-2.4\Release\src/_tkagg.obj failed with exit status 2 and recieved this response You need to install the tcl/tk headers as Darren mentioned. I just install ActiveTcl and the build should pick up on it no problem. And then after that I ran into another error that looks like it might be numpy related. So i am posting this here and on Matplotlibs list. The second error is why i am posting here but since some of you use the latest SVN on windows maybe you could offer more general help of how to compile matplotlib on windows I went ahead and installed Active Tcl I removed microsft visual studio 2003 .net from my computer because I never used it, and I did not want it on here in the first place but i had it on here from being an intern over the summer. C:\matplotlib\trunk\matplotlibc:\Python24\python.exe setup.py install GTK requires pygtk building tkagg 2 4 Building for python24 GTKAgg requires pygtk running install running build running build_py running build_ext No module named msvccompiler in numpy.distutils, trying from distutils.. building 'matplotlib.backends._tkagg' extension C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.exe /c /nologo /Ox /MD /W3 /GX /DNDEBUG -Iwin32_static/include/tcl84 -I. -Isrc -Iswig -Iagg23/incl ude -I. -I. -Iwin32_static/include/tcl84\freetype2 -I.\freetype2 -Isrc\freetype2 -Iswig\freetype2 -Iagg23/include\freetype2 -I.\freetype2 -I.\freetype2 -Ic:\Pyt hon24\include -Ic:\Python24\PC /Tpsrc/_tkagg.cpp /Fobuild\temp.win32-2.4\Release \src/_tkagg.obj _tkagg.cpp src\_tkagg.cpp(28) : fatal error C1083: Cannot open include file: 'tk.h': No suc h file or directory error: Command C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\cl.e xe /c /nologo /Ox /MD /W3 /GX /DNDEBUG -Iwin32_static/include/tcl84 -I. -Isrc - Iswig -Iagg23/include -I. -I. -Iwin32_static/include/tcl84\freetype2 -I.\freetyp e2 -Isrc\freetype2 -Iswig\freetype2 -Iagg23/include\freetype2 -I.\freetype2 -I.\ freetype2 -Ic:\Python24\include -Ic:\Python24\PC /Tpsrc/_tkagg.cpp /Fobuild\temp .win32-2.4\Release\src/_tkagg.obj failed with exit status 2 This is the error i got after my first try at python setup.py install after it did not work is when i uninstalled .net 2003. and i recieve this error currently. C:\matplotlib\trunk\matplotlibc:\Python24\python.exe setup.py install GTK requires pygtk building tkagg 2 4 Building for python24 GTKAgg requires pygtk running install running build running build_py running build_ext No module named msvccompiler in numpy.distutils, trying from distutils.. error: The .NET Framework SDK needs to be installed before building
Re: [Numpy-discussion] Irregular arrays
Think about gridding physical problems expressed in cylindrical or spherical coordinates. The natural slices are not rectangles. You can use rectangular storage but only with O(n^3) waste. I don't get this argument. Are you slicing your spherical coordinates with a cartesian coordinate system? That's surely a waste. Many times bases can be chosen so that you even in an array doesn't waste space. I can't see the point attacking numpy with this irregular generalisation. Numpy is a tool very good for it's purpose, we don't really want to trash it with features for solving unspecified general problems. Instead, specify a real world problem, and perhaps someone might have a good tip, otherwise look for other tools. Pytables for example can efficiently store varying length arrays. Maybe start on developing an variable length array yourself that integrates perfectly with Numpy where applicable? //Torgil On 9/5/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Exalted presences and superior intellects aside, the point is not hard to get: Motivational examples are everywhere. Think about gridding physical problems expressed in cylindrical or spherical coordinates. The natural slices are not rectangles. You can use rectangular storage but only with O(n^3) waste. More abstract solution spaces of math and physics do not usually lend themselves to rectangular treatments. (I understand finite element techniques and am not referring to those.) Again, rectangular storage is possible only with O(n^d) waste, where commonly d3. Granted one may overcome these issues with software development effort; that insight begs the question. I am looking for teaching software that already does so. I agree that rectangular storage is easiest for software programmers and hence common. It is not easiest for solving all problems. Students should explore solutiuon spaces in a proper setting. So I just asked what numpy could do in this regard. Now I have the plain answer, and am grateful for it. - 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=lnkkid=120709bid=263057dat=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=lnkkid=120709bid=263057dat=121642 ___ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
Re: [Numpy-discussion] Keyword added to searchsorted.
I agree. This'll allow me to delete some messy code I have to get the same behaviour. I'm amazed by how often I use searchsorted. 'side' sounds like a good keyword name to me. Martin Robert Kern wrote: Charles R Harris wrote: Hi all, I added the keyword side to the searchsorted method and functions. Thank you! Just the other day, I was wishing that we had such a thing. - 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=lnkkid=120709bid=263057dat=121642 ___ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
