Matlab

Mean gray scale of video
Hi all, I am new to MATLAB programming. I want to calculate mean gray scale of all frames in a .AVI video file and plot them w.r.t frame number. Please guide me. Rakesh ... 13 May 2010 20:29

Standalone exe, where is stdout/stderr?
I've built a MATLAB GUI and can get it to run and respond to button clicks, etc. It works just fine. However, one of my buttons doesn't work and is producing some sort of error. I get the Windows *ding* when I press the button, so I know it's failing. The problem is -- I don't get a command prompt or output windo... 14 May 2010 20:30

karssemeijer criteria+matlab code
how can help me about karssemeijer criteria+matlab code ... 12 May 2010 15:50

IFontDisp Object in Matlab?
Hello all, I am using a firewire camera that has it's own ActiveX SDK. One of the methods listed has the protype: Prototype DrawString( IN String Text, IN Integer X, IN Integer Y, IN IFontDisp Font, IN Long Color ) When I invoke in matlab I get: DrawString = void DrawString(handle, string, int16, in... 12 May 2010 15:50

Is there a better way to create this repetitive array?
I want to create an array that looks like this: ids = [1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6 ... N, N, N, N] Right now I'm using a for loop between 1 and N and concatenating each set of numbers on to the array. ids = [] for i=1:N ids = [ids ones(1,6)*i] end This works per... 13 May 2010 07:10

how to break a big column matrix into 2d matrix?
Hi friends, I have a matrix of dimension (2541 x 1). I need to rewrite this matrix into (121 x 21) The first 121 elements in matrix one will be the first row in second matrix and so on.... remember 121 x 21 =2541 please can someone help me... thanks in advance... cheers ... 12 May 2010 15:50

how to plot 2D graphs in multiple 3D levels
Hello, I have search the MATLAB Newsreader on the topic but found none. My problem is I have five scores plots of principal components analysis. I want to plot them parallel to each other along the z-axis. I have tried settting up a variable along z-axis and try to place each scores plot at some interval along the ... 12 May 2010 14:43

Generation of decision trees in Matlab possible ?
you can not. You have to write a script to do it. pedro "Amir Hossein " <a.gharehgozli(a)gmail.com> wrote in message <gncsih$eu9$1(a)fred.mathworks.com>... could you please tell me how i can show node numbers in my plot using treeplot? "Steven Lord" <slord(a)mathworks.com> wrote in message <gfc396$is1$1@f... 12 May 2010 14:43

cellfun to find index?
I am trying to use cellfun to find the max point for each cell of my 1x10 cell array. Is this possible? I tried this, but it returned all 1's: cellfun(@(x) find(max(x)), var1)%where var1 is my 1x10 cell array ... 12 May 2010 15:50

Get file date and time attributes from MATLAB...
"Jan Simon" <matlab.THIS_YEAR(a)nMINUSsimon.de> wrote in message <h3as7f$mdp$1(a)fred.mathworks.com>... Dear Andrey Kazak! Could you advice me please on the way to get file creation, modification date and time attributes from MATLAB? GetFileTime, SetFileTime at least for Windows: http://www.mathworks.... 12 May 2010 14:42