Matlab

Help with PWork Vector
Hi, I have created an s-function that works great when I run it, but when I try to run multiple s-functions within the same model I get segmentation faults. I was wondering if there is a problem with the way I am using the PWork vector. Inside the mdlStart function I create and populate the PWork vector in the f... 20 Jul 2010 11:20

Data extraction based on row specific criteria
Hi, Hoping someone can help me. I am working with a dataset which consists for 15 variables (columns) and up to 2000 samples (rows). I wish to extract a subset of the data which meets the following criteria: • The value in column a must be greater than or equal to the 95th percentile of the whole column. &#8... 20 Jul 2010 12:26

Reading a CSV File with Non-Numerical Entries
I'm trying to read in a csv file with this format... date, time, 0.1, 0.2, 0.3, 0.4, text date, time, 0.5, 0.6, 0.7, 0.8, text date, time, 0.9, 1.0, 1.2, 1.3, text The numbers I included are arbitrary, they could be whatever. The number of numerical columns can also vary, but the first two columns will always ... 20 Jul 2010 12:26

scalar double problem with shapewrite
I think you'll find that there's a NULL value of some sort, or that your struct isn't populated in the way that you expect -- I had the same issue with outputting the results of a clustering operation to a shape file and it was only when I printed out everything in the geographical object that I noticed this: S(8).C... 20 Jul 2010 11:20

matlab crashes (win 7 64 bit) without messages, logs or dumps while using mex-files linked with itpp library and compiled with mingw
Hello, I know, that this a very special problem and I would like to provide an error log or something like this, but this is the problem. Following situation: Matlab 2010a (64bit) on Win 7 64bit Enterprise Mingw-w64 with basis msys environment used modified gnumex to create .def and .lib files mexopt.bat modi... 20 Jul 2010 13:33

discrepancy in get(gca,'CurrentPoint') ... help?
Hello, I'm using this pt = get(gca,'CurrentPoint') in order to sample the image I'm displaying on a specific axis of my figure. This displays the x,y coordinates on the image correcty, but the coordinates that are returned are not correct. It is as if they are in different units or a different frame of re... 20 Jul 2010 12:27

Setting uigetfile file type or filterindex
I am using uigetfile to open files with a variety of extensions. I have a cell containing the various file types for "filterspec". Basically I want to be able to set which file type is active from filterspec, while still keeping the rest of the list available for user selection. Does anyone know how to do this? uige... 20 Jul 2010 11:20

Matlab Installation
Hi, I have a problem when installing Matlab. It returns installer error exception calling main. The file is not corrupted because the installation works on another pc. Searching for the solution on the Mathworks website, i found that there may be an exclamation point or an another non-alpha character set in the enviro... 20 Jul 2010 10:14

strings with quotes
I have been working on string . i got into a small problem.the problem is here as under here 's' is a structure ------ str = 'name' name s(1).(str) %works ------- str = fields1(1) %fields1 = fieldnames(s) 'name' s(1).(str) % does not work . here when i assign directly the str wit... 20 Jul 2010 10:14

remove row if it is 'mirrored'
"Natalie Sin Hwee " <sin.ng09(a)imperial.ac.uk> wrote in message <i248bi$n9k$1(a)fred.mathworks.com>... Dear Mathwork users, I have a 6000x2 matrix: 1 88 1 67 2 31 2 30 2 88 2 65 3 31 3 61 3 71 3 79 ... 20 Jul 2010 10:14