Matlab

Zooming on Pictures
I'm using Cogent in Matlab for a psychophysics study. I am displaying pictures (jpegs) and would like the picture to either slowly zoom in or slowly zoom out after a participant responds to the picture. Any idea of how to do this? Code is below: loadpict('risk1.jpg', 1); drawpict(1); EX1choice=0; while (EX1choi... 11 Jun 2010 18:08

Assigning different values to a variable in every loop
Dear all I am in the process of writing a program in which i need to Assign different values to a variable in every loop. Suppose i have loaded a matrices Tw1, Tw2, ............., Tw90 in the workspace and want to assign these values one by one to a variable say Tw successively in every loop in the following sample pr... 14 Jun 2010 08:24

How do you do this fast?
Hi all, I have sets A, B, C, where C is the biggest set, A is the smallest, C>B>A, i.e. C contains B contains A. These are indices indeed. I have a matrix m x n matrix MatrixC, where C=[1:n]. I have created a matrix MatrixB, which is MatrixB=MatrixC(:, B). Now I want to obtain MatrixA, which is ... 14 Jun 2010 16:14

problem with fsolve
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mdce server not reachable
Hi, I am running into some trouble with the mdce server. I start it with $ sudo ./mdce start -clean Starting the MATLAB Distributed Computing Server in the background. but, nodestatus does not work. $ ./nodestatus An error occurred while connecting to the mdce service on the host thales. The cause of... 15 Jun 2010 09:47

open file match string with white-space
I have to process files where I read line number 20, check for a pattern of string I'm looking for exists or not. I'm using textscan to read specific line number. This simple task is complicated when there are unknown number of spaces in between the pattern and no telling how many characters before or after the patter... 11 Jun 2010 17:00

evaluating a character as a variable?
Hello, I would like to know how to evaluate a character as a variable when the character is the name of a variable. I ask because I would like to set up a for loop that cycles over a number of variables. I have the names of the variables I want to cycle through in a variable called 'varNames'. Below is a dummy co... 11 Jun 2010 17:00

Passing variables between GUI calback functions
Hi, I am trying to pass variables from one callback function to another. I appear to be able to do this with a pushbutton callback function but not with an text callback function. My code looks like: %Obtains a list of preferences from a drop down menu function edit1_Callback(hObject, eventdata, handles) %... 14 Jun 2010 16:14

Probelm compiling using mex
using matlab 2010(a) I tried the example for mex files. mex -setup ... no problem there mex yprime.c ... run fine I then tried to use visual studio 2010, attached a process, but get some access violation errors. so I decided to stay with the matlab compiler, BUT now, when I try mex yprime.c I get this erro... 11 Jun 2010 15:54

How to send data using sound wave as carrier.
Hi guys, I was wondering if it is possible to use speaker and microphone as a transceiver and receiver. Can some one point a source of information. Can you adjust simulink to use particular hardware peripheral device. ... 11 Jun 2010 15:54