Matlab

correlation matrix
Dear all, I've a 31x256871 matrix and I need the correlation coefficients, but the size exceeds the maximum allowed. Where can I download a MATLAB script for solving this resctriction? Thank you ... 14 Jul 2010 12:04

how to use function eval for structure variable?
Hi All I am trying to use function eval to a structure variable. For sake of simplicity, first create a structure sv as sv.f1=5; sv.f2=6; The question is I can't access the fields of sv using eval('sv').f1 Any suggestion? Thanks in advance. ... 13 Jul 2010 17:31

plot figure won't appear
This is a strange one. When I do "plot(...)", the figure won't show up. However, if I do "figure", the figure shows up (as figure 2 of course), and then "plot(...)", the plot shows in figure 2. Which is fine I suppose, except that I have so old scripts and other people's scripts that no longer work they way th... 13 Jul 2010 17:31

Compiling MEX-file which calls C native code
Hello all, I am trying to compile a MEX-file (qp.c ), which calls C native code. The native code is available as "pr_logo.c". But performing the compilation I get the following error. I have tried also copying the pr_logo.c and pr_logo.h files to the working directory, but this did not help. Using Visual ... 13 Jul 2010 18:37

Matrix multiplication within a matrix or array
I have a 2 by 42 matrix and another 2 by 42 matrix like the following: A = [ 1 135 687 974 784... ;7694 4153 7894 951...] B= [ 68 15 789 7984...; 4687 4175 9541 358...] I would like to do a matrix multiplication of each 2x2 matrix contained in A by each 2x2 matrix in B, like the following: For the first 2x2 ... 13 Jul 2010 18:37

MATLAB Demystified Ch. 4 example on STDEV and Med
Remedial, I know: I'm "teaching myself MatLab" and I've only had BASIC about a hundred years ago...I've stumbled again. Using David McMahon's book, I'm trying to write a script following his example (and in his style, which I appreciate, he leads you through examples, then sets you up without spoonfeeding you) and I... 13 Jul 2010 18:37

how to call function from ohter m. file ?
call f1 into b.m file , from a.m file ... 15 Jul 2010 12:03

bwarea
Hello All, Can someone please explain how the "bwarea" command works ? It says that the value given is a rough estimate of the number of ON pixels. So if I have a binary image, and the number of ON or white pixels obtained using bwarea is 1800, how can I convert this into metric value if I know 1 pixel = 0.05 mm ? ... 14 Jul 2010 07:40

Removing rows containing all zeros in a matrix
"Anthony Hopf" <anthony.hopf(a)gmail.com> wrote in message <i1iaj1$d8k$1(a)fred.mathworks.com>... But what if you want to replace the values? m(any(m ==0,2),:)=[1 1 1]; This doesn't work, I get a dimension mismatch problem. Thank you m=[ 1 2 3 0 4 5 0 0 0 6 0 0 ]; n = any(m==0,2);... 13 Jul 2010 15:19

GUI Variable Sharing
Hey all, I am working on a gui with multiple components and am having some troubles. I need to use and edit variables created in one component in multiple other components, is there a good way to do this? -Garrett ... 13 Jul 2010 16:25