Mailman 3 September 2006 - SciPy-User

global fitting - some common or linked parameters.
by morovia morovia 22 Sep '06

22 Sep '06

Hello I have data sets and would like to fit them globally with common parameters. Is there a way to do this using existing scipy modules leastsq. Any pointers for algo and suggestions are welcome. Thanks Morovia

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global fitting - some common or linked parameters.
by morovia morovia 22 Sep '06

22 Sep '06

Hello I have data sets and would like to fit them globally with common parameters. Is there a way to do this using existing scipy modules leastsq. Any pointers for algo and suggestions are welcome. Thanks Morovia

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cookbook example on irregularly spaced data fails
by Craig Maloney 21 Sep '06

21 Sep '06

Hi all. I'm trying to use the delaunay module in the sandbox to do natural neighbor interpolation. I'm trying to follow the cookbook example at: http://www.scipy.org/Cookbook/Matplotlib/ Gridding_irregularly_spaced_data The "zi's" I get at the end of the day are all NaN. If I play around with the parameters, I can get *some* of the zi's to be nan. Any ideas of what might be wrong? numpy-1.0rc1 scipy-0.5.1 Thanks, Craig ------------------------------------------------------ Craig Maloney http://www.pha.jhu.edu/~cmaloney/

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global fitting - some common or linked parameters.
by morovia morovia 21 Sep '06

21 Sep '06

Hello I have data sets and would like to fit them globally with common parameters. Is there a way to do this using existing scipy modules leastsq. Any pointers for algo and suggestions are welcome. Thanks Morovia

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umfpack module update
by Robert Cimrman 21 Sep '06

21 Sep '06

Thanks to Nathan Bell, happy UMFPACK users can now access the LU factors of their sparse matrices using the scipy.linsolve.umfpack module, as an alternative to scipy.linsolve.splu() based on SuperLU. r.

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"catching warnings"
by Christian Meesters 21 Sep '06

21 Sep '06

Hi, In some cases calling interpolate.splrep results in the following warning: Warning: The required storage space exceeds the available strorage space. Probably causes: nest to small or s is too small. (fp>s) That's a really nice information to prevent the user from making more serious mistakes. I'm now trying to use the function in combination with some GUI-code. In my particular case, smoothing some curves might make sense. For pysical reasons it only makes sense, if the user applies only a small smoothing factor. Yet, I'd like to inform the user in case she / he is overdoing it, but have no chance to calculate a good factor in advance, because this is dataset dependend. Anyway, I should certainly inform the user about this warning. Is there a way to "catch" this warning, almost like an exception? TIA, Christian PS Suggestion: Perhaps one could change the lines above into: Warning: The required storage space exceeds the available storage space. Probable causes: nest to small or s is too small. (fp>s)

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ANN: Job postings -- Enthought, Inc.
by eric 20 Sep '06

20 Sep '06

Hey group, We are growing again and have multiple positions open here at Enthought. I'd love to recruit more people out of the Scipy/numpy community. I think many of you would find the work interesting. You can look at our career page for more info: http://www.enthought.com/careers.htm <http://www.enthought.com/careers.html> thanks! eric

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lsim changes shape of input u
by Ryan Krauss 20 Sep '06

20 Sep '06

signal.lsim is changing my input vector u from 1D to 2D: In [5]: shape(u) Out[5]: (1000,) In [6]: Y=signal.lsim(sys3,u,t) In [7]: shape(u) Out[7]: (1000, 1) I tried adding a U=squeeze(U) just before the return of lsim, but this didn't seem to fix the problem. This is causing errors else wher in my code when I try to export matrices that are columns of data, so I have lots of u=squeeze(u) sprinkled through out my code. Is there a way to make lsim do this so that I don't have to do it all the time? Thanks, Ryan

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where is signal?
by Ryan Krauss 19 Sep '06

19 Sep '06

I just upgraded to scipy svn and now I can't find the signal stuff. Is this hidden somewhere? Do I have to install it seperately? Ryan

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numpy 1.0b5 and scupy 0.5.1 build problems
by Tom Denniston 19 Sep '06

19 Sep '06

The web pages say they are but I have had a number of problems. I am using gcc version 3.2.3 and g77. I had to patch numpy distutils fcompiler/gnu.py file with the following patch to get past an undefined symbol error: changing the line : < if cpu.has_sse2(): opt.append('-msse2') to: > #if cpu.has_sse2(): opt.append('-msse2') Then once I did that I am getting Fortran compile errors. Does anyone know what causes this? I have googled a lot and also look over the build instructions. Am I doing something stupid or using the wrong compiler or something obvious like that? build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xb65):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:507: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xb9e):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:511: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xc09):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:514: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xc94):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:517: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xcd0):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:524: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xcf8):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:534: undefined reference to `Py_BuildValue' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xd36):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:501: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xd56):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:502: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.o(.text+0xd92): In function `f2py_rout__fftpack_zfftnd': build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:593: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xe0e):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:613: undefined reference to `PyArg_ParseTupleAndKeywords' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xe98):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:638: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xf1b):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:653: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xf51):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:668: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xfe6):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:674: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0xfeb):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:676: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1013):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:686: undefined reference to `Py_BuildValue' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1149):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:662: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1171):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:663: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1178):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:648: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1198):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:649: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x11b0):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:632: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.o(.text+0x1214): In function `f2py_rout__fftpack_destroy_zfft_cache': build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:741: undefined reference to `PyArg_ParseTupleAndKeywords' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x122b):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:752: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1253):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:762: undefined reference to `Py_BuildValue' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.o(.text+0x12a4): In function `f2py_rout__fftpack_destroy_zfftnd_cache': build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:802: undefined reference to `PyArg_ParseTupleAndKeywords' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x12bb):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:813: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x12e3):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:823: undefined reference to `Py_BuildValue' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.o(.text+0x1334): In function `f2py_rout__fftpack_destroy_drfft_cache': build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:863: undefined reference to `PyArg_ParseTupleAndKeywords' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x134b):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:874: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /Lib/fftpack/_fftpackmodule.o(.text+0x1373):build/src.linux-i686-2.4/Lib/fftpack/_fftpackmodule.c:884: undefined reference to `Py_BuildValue' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x2d): In function `F2PyDict_SetItemString': build/src.linux-i686-2.4/fortranobject.c:26: undefined reference to `PyDict_SetItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x57):build/src.linux-i686-2.4/fortranobject.c:20: undefined reference to `PyErr_Occurred' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x67):build/src.linux-i686-2.4/fortranobject.c:21: undefined reference to `PyErr_Print' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x6c):build/src.linux-i686-2.4/fortranobject.c:22: undefined reference to `PyErr_Clear' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0xb1): In function `PyFortranObject_New': build/src.linux-i686-2.4/fortranobject.c:40: undefined reference to `_PyObject_New' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0xc2):build/src.linux-i686-2.4/fortranobject.c:41: undefined reference to `PyDict_New' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1d5):build/src.linux-i686-2.4/fortranobject.c:65: undefined reference to `PyDict_SetItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x301): In function `PyFortranObject_NewAsAttr': build/src.linux-i686-2.4/fortranobject.c:77: undefined reference to `_PyObject_New' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x30e):build/src.linux-i686-2.4/fortranobject.c:79: undefined reference to `PyDict_New' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x38c): In function `array_from_pyobj': build/src.linux-i686-2.4/fortranobject.c:526: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x3a1):build/src.linux-i686-2.4/fortranobject.c:526: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x3c8):build/src.linux-i686-2.4/fortranobject.c:552: undefined reference to `PyType_IsSubtype' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x4da):build/src.linux-i686-2.4/fortranobject.c:608: undefined reference to `PyExc_ValueError' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x4e4):build/src.linux-i686-2.4/fortranobject.c:608: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x92d):build/src.linux-i686-2.4/fortranobject.c:643: undefined reference to `PyObject_Type' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x935):build/src.linux-i686-2.4/fortranobject.c:643: undefined reference to `PyObject_Str' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x93d):build/src.linux-i686-2.4/fortranobject.c:643: undefined reference to `PyString_AsString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x959):build/src.linux-i686-2.4/fortranobject.c:647: undefined reference to `PyExc_TypeError' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x110e): In function `fortran_dealloc': build/src.linux-i686-2.4/fortranobject.c:90: undefined reference to `PyObject_Free' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x1273): In function `fortran_getattr': build/src.linux-i686-2.4/fortranobject.c:186: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1366):build/src.linux-i686-2.4/fortranobject.c:208: undefined reference to `Py_FindMethod' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1384):build/src.linux-i686-2.4/fortranobject.c:203: undefined reference to `PyCObject_FromVoidPtr' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x139f):build/src.linux-i686-2.4/fortranobject.c:204: undefined reference to `PyDict_SetItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x13c1):build/src.linux-i686-2.4/fortranobject.c:195: undefined reference to `PyString_FromString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1409):build/src.linux-i686-2.4/fortranobject.c:197: undefined reference to `PyString_ConcatAndDel' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x143a):build/src.linux-i686-2.4/fortranobject.c:198: undefined reference to `PyDict_SetItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1468):build/src.linux-i686-2.4/fortranobject.c:160: undefined reference to `PyDict_GetItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x151d): In function `fortran_setattr': build/src.linux-i686-2.4/fortranobject.c:225: undefined reference to `_Py_NoneStruct' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x183f):build/src.linux-i686-2.4/fortranobject.c:218: undefined reference to `PyExc_AttributeError' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1853):build/src.linux-i686-2.4/fortranobject.c:218: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1887):build/src.linux-i686-2.4/fortranobject.c:271: undefined reference to `PyDict_SetItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x189d):build/src.linux-i686-2.4/fortranobject.c:265: undefined reference to `PyDict_DelItemString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x18b0):build/src.linux-i686-2.4/fortranobject.c:267: undefined reference to `PyExc_AttributeError' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x18c4):build/src.linux-i686-2.4/fortranobject.c:267: undefined reference to `PyErr_SetString' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x18d1):build/src.linux-i686-2.4/fortranobject.c:260: undefined reference to `PyDict_New' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x191e): In function `fortran_call': build/src.linux-i686-2.4/fortranobject.c:292: undefined reference to `PyExc_TypeError' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1932):build/src.linux-i686-2.4/fortranobject.c:292: undefined reference to `PyErr_Format' build/temp.linux-i686-2.4/build/src.linux-i686-2.4 /fortranobject.o(.text+0x1982):build/src.linux-i686-2.4/fortranobject.c:282: undefined reference to `PyExc_RuntimeError' build/temp.linux-i686-2.4/build/src.linux-i686-2.4/fortranobject.o(.text+0x1bb7): In function `fortran_doc': build/src.linux-i686-2.4/fortranobject.c:141: undefined reference to `PyString_FromString' ../gcc/3.2.3/bin/../lib/gcc-lib/i686-pc-linux-gnu/3.2.3/../../../libfrtbegin.a( frtbegin.o)(.text+0x32): In function `main': : undefined reference to `MAIN__' collect2: ld returned 1 exit status

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