Matlab

Fitting distribution to data
Dear All, I have some data vectors x and y, and using these data I need to fit the distribution y=N(0,a+b*x), where N is the normal distribution (i.e. zero mean, standard deviation linearly dependent on x). Anyone has any idea on how to do it in Matlab (how to find the values of a and b and possibly their distribut... 10 Aug 2010 18:00

Preventing textscan from choking on irrelevant input
Sorry about the somewhat ambiguous title, but nothing else would appear to fit. I have the following header in a data file: Sample: 'GFP(EM) File name: datafile1.FDS Run Date: 11:57:30, 08/09/2010 Operator: GC Comment: ' User comment: <this can run into multiple lines> <some random text> Instrument Par... 10 Aug 2010 14:41

error compiling mex file
I'm trying to compile a mex file in MATLAB 2007a but when I type mex filename.cpp I get "fatal error C1083" and says it can't find the header file. If I build the project in MS VC++ 2008 Express, I have no problems. Any suggestions are appreciated. VC++ 2009 Ex is already set as my compiler in MATLAB. ... 10 Aug 2010 14:41

Undefined function or variable - for no reason...
Hi, I am facing the same problem today. I try to run the .m file in my current directory and Matlab would give the message - "Undefined function or variable". I add the current path and still it does not recognize any .m file in the current directory. Moreover, any new .m file is not running at all, while some... 10 Aug 2010 20:14

Time-Frequency Analysis
Hi I need to perform a Gabor-Wigner transform (http://en.wikipedia.org/wiki/Gabor-Wigner_transform) for analysing my data. Do you know if there is something, on internet, already implemented for that or I have to implement it? I the worst of case how is the fastest way for coding the equations of the transforms... 10 Aug 2010 13:35

Textscan with non delimited text
I am trying to import large datafiles in the DSI-3200 format (http://www1.ncdc.noaa.gov/pub/data/documentlibrary/tddoc/td3200.pdf), but there are not delimited: DLY43124399SNOWTI19030299990280199-99999M00299-99999M00399-99999M00499-99999M00599-99999M00699-99999M00799-99999M00899-99999M00999-99999M01099-99999M01199-9... 10 Aug 2010 13:35

What happened to the FRF function?
Two coworkers using MATLAB version 2008 have the function named "FRF". I have the 2009a version and when I type "help frf" I get the following message: "frf not found." Does anyone know what happened to the "frf" function? Can someone please tell me how to get the "frf" function? ... 10 Aug 2010 13:35

Remove plot dead space in weekly plot
"us " <us(a)neurol.unizh.ch> wrote in message <i3rh1o$i58$1(a)fred.mathworks.com>... "Travis Knepp" <notpartofaddress.travis.n.knepp(a)nasa.gov.removenotpartofaddress> wrote in message <i3rgd4$86h$1(a)fred.mathworks.com>... I'm plotting data that is date/time stamped. I've separated the data according to day of week (... 10 Aug 2010 12:27

Image sidelobe ratio calculation
Hello, We are working on a biomedical imaging system. The results we currently obtain are the images having lobes. I order to estimate the performance of the algorithms we need to compute the sidelobe ratio characteristic of an image. We have implemented our version, but it fails in certain cases. Is there already... 10 Aug 2010 13:35

Accessing libfftw3.dll in MATLAB directory
Hi all, Does anyone know if it's possible to link libfftw3.dll in the MATLAB directory to a MEX file? Considering that they don't include neither header nor .lib files, I'm not very optimistic. But I wonder if there is a hack to make it happen. I've tried "loadlibrary libfft3w.dll" with fftw3.h from the latest... 10 Aug 2010 12:27