Matlab

Problems with copyobj() in a uicontextmenu callback function
I have just started learning how to write GUIs in MATLAB. I am trying to write a context menu that copies a single subplot to a new figure. I was able to get a test case working by using the following code: close all clear figure s = NaN(2,1); p = NaN(2,1); t = 0:.1:2*pi; s(1)=subplot(2,1,1); hold on... 10 Jun 2010 14:32

mxGetPr size as double*
Hi I'm trying to write a C++ mex file. The prhs[0] is pass to the mex file is a vector of size n. Inside my C++ code I need to make a type conversion. At the moment I have something like: double* test = mxGetPr(prhs[0]); However the watch in Visual studio then shows the size of the pointer only as 1 value, ... 8 Jun 2010 18:20

Returning variables from GUI to .m file script.
Hi Everyone, I've been tinkering with this for the past few days and not getting anywhere. Since posting, I've spent a lot of time trying to update my GUIDE GUI with uiwait() where it tells me to put it in the function, and putting uiresume() in various places. I thought it might make some sense to mess around w... 8 Jun 2010 14:51

getframes from imagesc w/ a custom colormap
Hi all, I'm trying to make a movie from images created with imagesc. These images corresponds to matrices which can have 18 different values and I created a custom colormap to represent these different 18 values. Now, this matrix, called featuremap, is in a for loop, for let say 100 iterations, so I'll get 100 imag... 11 Jun 2010 18:08

Nonlinear Aoctool
I too have run across the need for a nonlinear aoctool, but I think this thread has confused me more than helped me. If I propose a simplified example, I hope that someone can humor me with a simple MATLAB solution. Imagine the child growth charts found in every pediatricians office. They are fitted curves based o... 10 Jun 2010 17:54

Image Sharpening Techniques
For anyone who needs it.. Here is a good method... H = fspecial('unsharp'); % I = imfilter(I,H,'replicate'); ... 7 Jun 2010 14:18

write a matrix in .dat file
Dear sir I have 128x128 binary matrix, i want to write this matrix in .dat/.txt file. waiting 4 reply ... 7 Jun 2010 14:18

How to set the seed as a 128 binary string of psudo random number generator (randn)
On 6/7/2010 9:27 AM, Walter Roberson wrote: Peter Perkins wrote: Randima, the generators in MATLAB accept an integer value between 0 and 2^31 as a seed Not 2^31: Walter, you're right. I hit the wrong key. The limits on seed can be tricky to find in the documentation -- they are not document... 7 Jun 2010 15:27

next step in for loop.....help me
Hi If I have for loop, and I want increment the value of abc directly to next value in the variable DD...How? Example: DD=[1 3 4 8 9 10]; for abc= min(DD(:)) : max(DD(:)) % start from 1 to 10 by one .. .. .. ..... ... end _______ in the above example, it will increase by one from the minimum valu... 8 Jun 2010 17:11

qr economy LaPack
Dear Matlab community, As the qr documentation states that it uses DGEQRF Lapack subroutine to calculate the QR factorization. I have tried this method, and it worked for only certain kind of matrices (i.e random matrix), but it didn't exactly match the more general matrix (not necessarily rank deficient, but more s... 7 Jun 2010 14:17