Math Forum / Math Software / MATLAB / July 2008

Dear Matlab -
I am using Mac OS X 10.5.2 and am compiling my own MEX files. After
recompiling my MEX files (using a make file outside of Matlab), Matlab still
executes the first version of the code rather than the recompiled version.

Does anyone know if it is possible to extract data from
a .fig file, such as a .fig file containing a scatter plot
with 100,000 data points?
Thanks so much!

I have a license for MATLAB only and would like to create a
stand alone exe to run a time consuming program. I looked
online and found the mcc method but I don't have a license
for Matlab compiler. If I can't use mcc, can I create a

I have a set of microcontrollers for electrophysiology that
I would like to create a MATLAB GUI to control them from. I
know communication between a PC and the controller is
possible as the company has put out a crude program which

I am trying to convolve a sine wave with a random signal.
Instead of using conv function, I am multiplying them in the
frequency domain and then taking the ifft. I have taken care
of the zero padding issue in the time domain. The problem is

Today morning I've just edited one of my GUIs, and after I
finished that I tried to use it, as normal. But this time I
couldn't. If I try to run a GUI (any of the GUIs, included
built in), I get error messages like this:

I am making a GUI and I want the user to be able to save a
uint8 array as a jpeg.  I want to prompt the user for a
directory/filename as in UIsave, but save the array as a
jpg.  Imwrite does exactly what I want, but is there a way

I have a matrix with 5 columns and n rows. I want to find
the minium number in column B before the numbers become
negative. Then I want to find the corresponding value in
the matrix in column D & E at the last positive number in

.. Suppose I want to add a method to the built-in dataset-
array class. I can add a file to
C:\Program Files\MATLAB\R2007a\toolbox\stats\@dataset
folder, but the problem is, if I operate a file repository

I have many .txt files
I am using variables in GUI in the following form.
data
data{i}.pp;

Hi
Guys can anyone help me please
I am using cell array as a buffer to store packets, each
colomn represents packets that is belong to the same source,

I am trying find the natural frequency of a vibration problem
The standard eigenvalue problem looks like
Kx=lMx
for which there is a simple eig(K,M) command that does the

I have an image processing loop that looks up all the images
in a folder and acquires some data. During the
postprocessing, I display the image, and the points where I
get the data using following commands:

.. How about Matlab 2008?
Here's an example. I have Server and Database classes, and
wish to preserve the most recent Server object in memory.
function[obj] = Server

I am making a GUI and I want the user to be able to save a
uint8 array as a jpeg.  I want to prompt the user for a
directory/filename as in UIsave, but save the array as a
jpg.  Imwrite does exactly what I want, but is there a way