Mailman 3 August 2009 - SciPy-User

EPD Webinar September 4th: How do I...read data from all kinds of files?
by Amenity Applewhite 29 Aug '09

29 Aug '09

Having trouble viewing this email? Click here Friday, September 4th 1pm CDT How do I...read data from all kinds of files? Working with various file formats. Hello Leah, We wanted to let you know that next week we'll host another installment of our popular EPD webinar series. Although only EPD Basic or above subscribers are guaranteed seats at EPD webinars, we invite non-subscribers to add their names to the waiting list for each event. If there are available seats, you will be notified by next Thursday and given access to the webinar. Links to the waiting lists and upcoming topics are posted here: http://enthought.com/training/webinars.php These events feature detailed demonstrations of powerful Python techniques that Enthought developers use to enhance our applications or development process. Participants are often invited to participate in the demonstration, and are welcome to join the interactive VOIP discussion later in the session. This is a great opportunity to learn new methods and interact with our expert developers. If you have topics you'd like to see addressed during the webinar, feel free to let us know at media(a)enthought.com. How do I...read data from all kinds of files? Getting data from where it sits into NumPy so it can be manipulated using the wealth of libraries available in EPD is usually the first step in any workflow. In this webinar we will illustrate by example how to read (and write) different kinds of data files: CSV, Excel, HDF, .MAT, and arbitrary ASCII and arbitrary binary files. We will show how data can be accessed using either the filesystem or the world wide web. Once again, to add your name to the wait-list: http://enthought.com/training/webinars.php We hope to see you there! Thanks, Enthought Media Quick Links... Enthought.com Enthought Python Distribution (EPD) Enthought Webinars @Facebook @Twitter Forward email -- Amenity Applewhite Enthought, Inc. Scientific Computing Solutions www.enthought.com

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odeint : knowing time step that the solver tried to use...
by Fabrice Silva 28 Aug '09

28 Aug '09

Hi folks, I am dealing with a resolution of a set of ODE which periodically becomes to a stiff problem (but it isn't the trouble here). Odeint is used. There are some cases where the solver does not succeed to converge, a lot of time step are done before reaching 'tout'. Is there a way to get the unsuccessful time step? It may help us to determine whether our model has a problem... -- Fabrice Silva Laboratory of Mechanics and Acoustics - CNRS 31 chemin Joseph Aiguier, 13402 Marseille, France.

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Finding Positions of Identical Entries in Arrays of Different Size
by Lorenzo Isella 27 Aug '09

27 Aug '09

Dear All, A problem which should be rather easy, but which is giving me a hard time. (1) Consider for instance the following two arrays A=[12,78,98,654,7665,1213,765] and B=[98,765, 654] Now, what I need is an efficient way of finding the positions of the entries of A equal to the entries of B, that is to say in the case of the two arrays above (counting from zero) C=[2,6,3]. Note that in the example there is a single entry of A equal to the i-th entry of B. I have tried using scipy.where, but unsuccessfully. Any ideas about how to code that efficiently? (2) I would like to extend this to the case where A and B are m times n arrays, e.g. consider the case A= 233 789 987 734 890 253 876 321 534 489 and B= 987 734 876 321 and C is now the 1D vector returning the positions of the rows of A equal to those of B, i.e. C=[1, 3]. Any suggestions is really welcome. Kind Regards Lorenzo

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installing pynifti under EPD
by Karl Young 27 Aug '09

27 Aug '09

Sorry if this issue is slightly tangential to the interests of this group but I couldn't think of any place else to ask (e.g. I don't think the pynifti guys have a list). I'd like to read some analyze image files (Mayo clinic medical image file format) into numpy arrays and process them. This works fine in linux but I'm currently trying to use Enthought's EPD distribution under OS X (Python 2.5.4 |EPD_Py25 4.3.0| (r254:67916, May 17 2009, 20:07:12)) and having no luck installing pynifti to read the analyze files. I downloaded and tried to install pynifti (pynifti-0.20090303.1) using the standard distutils mechanism but when I import nifti I got errors saying some of the symbols in _clib.so couldn't be found. So I downloaded and installed nifticlib-1.1.0 but that didn't help, I tried to copy the various nifticlib libraries into obvious places to no avail and there isn't much in the way of documentation on this so I was wondering if anyone had the magic incantation for installing pynifti under EPD on OS X; sorry again if this is slightly off topic. -- Karl Young

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Usage of scipy.signal.resample
by markus.proeller＠ifm.com 27 Aug '09

27 Aug '09

Hello, I have a question concerning the resample function of scipy. I have the following code: from scipy.signal import resample >>>x = array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) >>>resample(x,5) array([ 2.5 , 1.26393202, 4.5 , 5.5 , 8.73606798]) I don't understand the first value of 2.5. My scipy version is 0.7.0 Thanks for help, Markus

5 13

shiftgrid difficulties
by Bruce Ford 27 Aug '09

27 Aug '09

mpl_toolkits_basemap.shiftgrid looks straight forward enough, but I cannot find a working combination. Let me explain: I'm trying to plot a variable that I've extracted from a NetCDF file. When I plot it, I get something that looks like the attached file...it only plots in the Eastern hemisphere (0-180). The longitude array is [ 0. 1. 2. ... 356. 357. 358. 359.] When trying "sig_wav_ht,lon = shiftgrid(180,sig_wav_ht,lon,start=False)" or any other combination using different lon0 I get the same error "cyclic point not included" What am I missing? Some of the code prior to the shiftgrid method: file1 = sc_settings.data_dir + "/ww3/ww3.199301.nc" nc = NetCDFFile(file1) for var in nc.variables: print var sig_wav_ht = nc.variables['sig_wav_ht'][1,:,:] lon = nc.variables['longitude'][:] print lon lat = nc.variables['latitude'][:] sig_wav_ht,lon = shiftgrid(180,sig_wav_ht,lon,start=False) Any help would be appreciated. Bruce --------------------------------------- Bruce W. Ford Clear Science, Inc. bruce(a)clearscienceinc.com bruce.w.ford.ctr(a)navy.smil.mil http://www.ClearScienceInc.com Phone/Fax: 904-379-9704 8241 Parkridge Circle N. Jacksonville, FL 32211 Skype: bruce.w.ford Google Talk: fordbw(a)gmail.com

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interactive tool with data
by Tim Michelsen 27 Aug '09

27 Aug '09

Hello, is there any interactive tool for scientific python, that supports data import by dialog windows? I am thinking of something like R-Commander for R-Project: http://yfrog.com/e4rcommanderdataimportj For instance, IPython could have a magic: %fileimport This could open a dialog to select any file that can be read in with numpy, scipy tools or any other library read in before (timeseries, hdf, pytables). This could be convenient for interactive data analysis and for quick checking. What to you think? Best, Timmie

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More elegant way to recover the last iterate of a non-converging newton?
by David Goldsmith 27 Aug '09

27 Aug '09

Hi, folks! Question re: my own work - I'm using scipy.optimize.minpack.newton with a rather low maxiter (10) so it's frequently terminating with the "Failed to converge after maxiter iterations, value is <last iterate>" RuntimeError, which isn't a problem for now. What is a problem is I still want to use <last iterate>, and the best I've come up with for "catching" it is: try: result = newton(f, z, fp, tol=tol, maxiter=maxiter) except RuntimeError, e: result = np.complex( e.message.split( '(' )[-1].split( ')' )[0] ) There's got to be a better way, no? DG

2 2

errors from scipy.test(), from import calc_lwork
by robert roze 26 Aug '09

26 Aug '09

I get 10 errors from the scipy.test() routine. Nine of them appear to happen when the linalg/basic.py module executes: from scipy.linalg import calc_lwork Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/scipy/linalg/__init__.py", line 8, in <module> from basic import * File "/net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/scipy/linalg/basic.py", line 24, in <module> from scipy.linalg import calc_lwork ImportError: cannot import name calc_lwork It seems like all modules that import calc_lwork fail this way. At the python command line, I get the ImportError from all these modules: scipy.stats, scipy.signal, scipy.maxentropy, scipy.linalg, scipy.interpolate All, complaining about "calc_lwork" But the other modules import without complaint (scipy.sparse, scipy.optimize, etc...) In the site-packages/scipy/linalg directory, there is a file called calc_lwork.so, so it appears to exist, but it is a binary file, I don't know the type, why it wouldn't be import-able, and this is where my software skills start to fade. Does anyone have any idea why calc_lwork can't import? Here is the info on my platform, versions, etc: 1) Platform information:: posix linux2 Linux ld23 2.6.9-78.0.5.ELsmp #1 SMP Wed Sep 24 05:40:24 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux RedHad Enterprise version 3.4, and I do not have root 2) Information about C,C++,Fortran compilers/linkers as reported by the compilers when requesting their version information, e.g., the output of :: gcc -v Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/specs Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-java-awt=gtk --host=x86_64-redhat-linux Thread model: posix gcc version 3.4.6 20060404 (Red Hat 3.4.6-8) g77 --version GNU Fortran (GCC) 3.4.6 20060404 (Red Hat 3.4.6-8) Copyright (C) 2006 Free Software Foundation, Inc. 3) Python version:: python -c 'import sys;print sys.version' 2.6.2 (r262:71600, Aug 26 2009, 13:45:43) [GCC 3.4.6 20060404 (Red Hat 3.4.6-8)] 4) NumPy version:: python -c 'import numpy;print numpy.__version__' 1.3.0 5) ATLAS version, the locations of atlas and lapack libraries, building information if any. If you have ATLAS version 3.3.6 or newer, then give the output of the last command in :: cd scipy/Lib/linalg I didn't find this directory, but found a similar one here: scipy-0.7.1/scipy/linalg which contained the file, setup_atlas_version.py, so I ran it and got this error: python setup_atlas_version.py build_ext --inplace --force Traceback (most recent call last): File "setup_atlas_version.py", line 7, in <module> from numpy.distutils.misc_util import get_path, default_config_dict ImportError: cannot import name get_path python -c 'import atlas_version' Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: No module named atlas_version 7) The output of the following commands python /net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/numpy/distutils/system_info.py lapack_info: libraries lapack not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack not found in /usr/local/lib64 libraries lapack not found in /usr/local/lib FOUND: libraries = ['lapack'] library_dirs = ['/usr/lib64'] language = f77 lapack_opt_info: lapack_mkl_info: mkl_info: libraries mkl,vml,guide not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries mkl,vml,guide not found in /usr/local/lib64 libraries mkl,vml,guide not found in /usr/local/lib libraries mkl,vml,guide not found in /usr/lib64 libraries mkl,vml,guide not found in /usr/lib NOT AVAILABLE NOT AVAILABLE atlas_threads_info: Setting PTATLAS=ATLAS libraries ptf77blas,ptcblas,atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack_atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib64 libraries lapack_atlas not found in /usr/local/lib64 libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib libraries lapack_atlas not found in /usr/local/lib libraries ptf77blas,ptcblas,atlas not found in /usr/lib64 libraries lapack_atlas not found in /usr/lib64 libraries ptf77blas,ptcblas,atlas not found in /usr/lib/sse2 libraries lapack_atlas not found in /usr/lib/sse2 libraries ptf77blas,ptcblas,atlas not found in /usr/lib libraries lapack_atlas not found in /usr/lib __main__.atlas_threads_info NOT AVAILABLE atlas_info: libraries f77blas,cblas,atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack_atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries f77blas,cblas,atlas not found in /usr/local/lib64 libraries lapack_atlas not found in /usr/local/lib64 libraries f77blas,cblas,atlas not found in /usr/local/lib libraries lapack_atlas not found in /usr/local/lib libraries f77blas,cblas,atlas not found in /usr/lib64 libraries lapack_atlas not found in /usr/lib64 libraries f77blas,cblas,atlas not found in /usr/lib/sse2 libraries lapack_atlas not found in /usr/lib/sse2 libraries f77blas,cblas,atlas not found in /usr/lib libraries lapack_atlas not found in /usr/lib __main__.atlas_info NOT AVAILABLE /net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/numpy/distutils/system_info.py:1290: UserWarning: Atlas (http://math-atlas.sourceforge.net/) libraries not found. Directories to search for the libraries can be specified in the numpy/distutils/site.cfg file (section [atlas]) or by setting the ATLAS environment variable. warnings.warn(AtlasNotFoundError.__doc__) blas_info: libraries blas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries blas not found in /usr/local/lib64 libraries blas not found in /usr/local/lib FOUND: libraries = ['blas'] library_dirs = ['/usr/lib64'] language = f77 FOUND: libraries = ['lapack', 'blas'] library_dirs = ['/usr/lib64'] define_macros = [('NO_ATLAS_INFO', 1)] language = f77 wx_info: Could not locate executable wx-config File not found: None. Cannot determine wx info. NOT AVAILABLE lapack_atlas_info: libraries lapack_atlas,f77blas,cblas,atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack_atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack_atlas,f77blas,cblas,atlas not found in /usr/local/lib64 libraries lapack_atlas not found in /usr/local/lib64 libraries lapack_atlas,f77blas,cblas,atlas not found in /usr/local/lib libraries lapack_atlas not found in /usr/local/lib libraries lapack_atlas,f77blas,cblas,atlas not found in /usr/lib64 libraries lapack_atlas not found in /usr/lib64 libraries lapack_atlas,f77blas,cblas,atlas not found in /usr/lib/sse2 libraries lapack_atlas not found in /usr/lib/sse2 libraries lapack_atlas,f77blas,cblas,atlas not found in /usr/lib libraries lapack_atlas not found in /usr/lib __main__.lapack_atlas_info NOT AVAILABLE umfpack_info: libraries umfpack not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries umfpack not found in /usr/local/lib64 libraries umfpack not found in /usr/local/lib libraries umfpack not found in /usr/lib64 libraries umfpack not found in /usr/lib NOT AVAILABLE _pkg_config_info: Found executable /usr/bin/pkg-config NOT AVAILABLE lapack_atlas_threads_info: Setting PTATLAS=ATLAS libraries lapack_atlas,ptf77blas,ptcblas,atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack_atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries lapack_atlas,ptf77blas,ptcblas,atlas not found in /usr/local/lib64 libraries lapack_atlas not found in /usr/local/lib64 libraries lapack_atlas,ptf77blas,ptcblas,atlas not found in /usr/local/lib libraries lapack_atlas not found in /usr/local/lib libraries lapack_atlas,ptf77blas,ptcblas,atlas not found in /usr/lib64 libraries lapack_atlas not found in /usr/lib64 libraries lapack_atlas,ptf77blas,ptcblas,atlas not found in /usr/lib/sse2 libraries lapack_atlas not found in /usr/lib/sse2 libraries lapack_atlas,ptf77blas,ptcblas,atlas not found in /usr/lib libraries lapack_atlas not found in /usr/lib __main__.lapack_atlas_threads_info NOT AVAILABLE x11_info: FOUND: libraries = ['X11'] library_dirs = ['/usr/X11R6/lib64'] include_dirs = ['/usr/X11R6/include'] fftw_info: libraries fftw3 not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries fftw3 not found in /usr/local/lib64 libraries fftw3 not found in /usr/local/lib libraries fftw3 not found in /usr/lib64 libraries fftw3 not found in /usr/lib fftw3 not found libraries rfftw,fftw not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries rfftw,fftw not found in /usr/local/lib64 libraries rfftw,fftw not found in /usr/local/lib libraries rfftw,fftw not found in /usr/lib64 libraries rfftw,fftw not found in /usr/lib fftw2 not found NOT AVAILABLE f2py_info: FOUND: sources = ['/net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/numpy/f2py/src/fortranobject.c'] include_dirs = ['/net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/numpy/f2py/src'] gdk_pixbuf_xlib_2_info: NOT AVAILABLE dfftw_threads_info: libraries drfftw_threads,dfftw_threads not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries drfftw_threads,dfftw_threads not found in /usr/local/lib64 libraries drfftw_threads,dfftw_threads not found in /usr/local/lib libraries drfftw_threads,dfftw_threads not found in /usr/lib64 libraries drfftw_threads,dfftw_threads not found in /usr/lib dfftw threads not found NOT AVAILABLE atlas_blas_info: libraries f77blas,cblas,atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries f77blas,cblas,atlas not found in /usr/local/lib64 libraries f77blas,cblas,atlas not found in /usr/local/lib libraries f77blas,cblas,atlas not found in /usr/lib64 libraries f77blas,cblas,atlas not found in /usr/lib/sse2 libraries f77blas,cblas,atlas not found in /usr/lib NOT AVAILABLE fftw3_info: libraries fftw3 not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries fftw3 not found in /usr/local/lib64 libraries fftw3 not found in /usr/local/lib libraries fftw3 not found in /usr/lib64 libraries fftw3 not found in /usr/lib fftw3 not found NOT AVAILABLE blas_opt_info: blas_mkl_info: libraries mkl,vml,guide not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries mkl,vml,guide not found in /usr/local/lib64 libraries mkl,vml,guide not found in /usr/local/lib libraries mkl,vml,guide not found in /usr/lib64 libraries mkl,vml,guide not found in /usr/lib NOT AVAILABLE atlas_blas_threads_info: Setting PTATLAS=ATLAS libraries ptf77blas,ptcblas,atlas not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib64 libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib libraries ptf77blas,ptcblas,atlas not found in /usr/lib64 libraries ptf77blas,ptcblas,atlas not found in /usr/lib/sse2 libraries ptf77blas,ptcblas,atlas not found in /usr/lib NOT AVAILABLE /net/easystreet/vol/homes/rroze/Python-2.6.2/lib/python2.6/site-packages/numpy/distutils/system_info.py:1383: UserWarning: Atlas (http://math-atlas.sourceforge.net/) libraries not found. Directories to search for the libraries can be specified in the numpy/distutils/site.cfg file (section [atlas]) or by setting the ATLAS environment variable. warnings.warn(AtlasNotFoundError.__doc__) FOUND: libraries = ['blas'] library_dirs = ['/usr/lib64'] define_macros = [('NO_ATLAS_INFO', 1)] language = f77 sfftw_info: libraries srfftw,sfftw not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries srfftw,sfftw not found in /usr/local/lib64 libraries srfftw,sfftw not found in /usr/local/lib libraries srfftw,sfftw not found in /usr/lib64 libraries srfftw,sfftw not found in /usr/lib sfftw not found NOT AVAILABLE xft_info: FOUND: libraries = ['Xft', 'X11', 'freetype', 'Xrender', 'fontconfig'] library_dirs = ['/usr/X11R6/lib64'] define_macros = [('XFT_INFO', '"\\"2.1.2.2\\""'), ('XFT_VERSION_2_1_2_2', None)] include_dirs = ['/usr/X11R6/include', '/usr/include/freetype2', '/usr/include/freetype2/config'] fft_opt_info: fftw2_info: libraries rfftw,fftw not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries rfftw,fftw not found in /usr/local/lib64 libraries rfftw,fftw not found in /usr/local/lib libraries rfftw,fftw not found in /usr/lib64 libraries rfftw,fftw not found in /usr/lib fftw2 not found NOT AVAILABLE dfftw_info: libraries drfftw,dfftw not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries drfftw,dfftw not found in /usr/local/lib64 libraries drfftw,dfftw not found in /usr/local/lib libraries drfftw,dfftw not found in /usr/lib64 libraries drfftw,dfftw not found in /usr/lib dfftw not found NOT AVAILABLE djbfft_info: NOT AVAILABLE NOT AVAILABLE gdk_x11_2_info: NOT AVAILABLE agg2_info: NOT AVAILABLE numarray_info: NOT AVAILABLE blas_src_info: NOT AVAILABLE fftw_threads_info: libraries rfftw_threads,fftw_threads not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries rfftw_threads,fftw_threads not found in /usr/local/lib64 libraries rfftw_threads,fftw_threads not found in /usr/local/lib libraries rfftw_threads,fftw_threads not found in /usr/lib64 libraries rfftw_threads,fftw_threads not found in /usr/lib fftw threads not found NOT AVAILABLE _numpy_info: NOT AVAILABLE gdk_info: NOT AVAILABLE gtkp_x11_2_info: NOT AVAILABLE sfftw_threads_info: libraries srfftw_threads,sfftw_threads not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries srfftw_threads,sfftw_threads not found in /usr/local/lib64 libraries srfftw_threads,sfftw_threads not found in /usr/local/lib libraries srfftw_threads,sfftw_threads not found in /usr/lib64 libraries srfftw_threads,sfftw_threads not found in /usr/lib sfftw threads not found NOT AVAILABLE boost_python_info: NOT AVAILABLE freetype2_info: FOUND: libraries = ['freetype', 'z'] define_macros = [('FREETYPE2_INFO', '"\\"9.7.3\\""'), ('FREETYPE2_VERSION_9_7_3', None)] include_dirs = ['/usr/include/freetype2'] gdk_2_info: NOT AVAILABLE lapack_src_info: NOT AVAILABLE gtkp_2_info: NOT AVAILABLE gdk_pixbuf_2_info: NOT AVAILABLE amd_info: libraries amd not found in /net/easystreet/vol/homes/rroze/Python-2.6.2/lib libraries amd not found in /usr/local/lib64 libraries amd not found in /usr/local/lib libraries amd not found in /usr/lib64 libraries amd not found in /usr/lib NOT AVAILABLE Numeric_info: NOT AVAILABLE numerix_info: numpy_info: FOUND: define_macros = [('NUMPY_VERSION', '"\\"1.3.0\\""'), ('NUMPY', None)] FOUND: define_macros = [('NUMPY_VERSION', '"\\"1.3.0\\""'), ('NUMPY', None)] 9) ldd /path/to/ext_module.so ldd: /path/to/ext_module.so: No such file or directory

1 0

fsolve, no solution and the ier flag
by Permafacture 26 Aug '09

26 Aug '09

How do I check the ier flag for fsolve? intersect = fsolve(f,[1.,1.], full_output=1) this returned an extended output but there was no ier flag in there. thanks elliot

1 1