Math Forum / Math Software / MATLAB / July 2008

Some advice would be great if anyone knows about this...
I have a Simulink model, made up largely of SimMechanics blocks. I am
running it for very short time-steps, thousands of times. As such,
running it just in the Simulink window is painfully slow.

I build several interface for calculate my system. but, I
can't used the data that im enter at the first interface to
the other interface.Means, if I to used the second interface
for example, I have to re-enter again the data. can I just

Suppose an m-file "xSquare" which plots the square
and logarithm of an input vector.  Note that there are two
axes in the the figure window. :

I have this huge list of data where I have to choose the
single maturity at a time to make surface.
Anyone has any idea how I can choose one maturity at a time
from the datafile after loading the data and sorting them

I need to optimize a 3x3 Matrix M. The cost function is
f(k1,k2,....,k9) with k1...k9 are the entries of M.
I need to set a constrain on k1,...k9 such that for all vectors [ a b
c] where  0<=a<=255;  0<=b<=255; 0<=c<=255; a, b, and c are integers,

I have an array of dimension: 1 x 64 x 16
Instead of having the above 3D array, I want the same data to be in a
2D array of dimension: 64 x 16
I need this because I want to use a mesh plot and it works only on a

I would like to know whether it is possible to plot a real
time graph from serial port input.
I have written the code, but it seems the data is not
plotting real time. I understand that the data is stored in

Hi everyone -
I have what seems to be a simple problem - I'd like to
control a GUI from an interactive script.  I know it can't
be too hard, but I haven't looked in the right place yet.

I want to Plot a Matrix (10x20), with 0, 1 or 2 in each
field. I used scatter, to get each type of Matrix-entry in a
different color, but my problem is that I cannot choose wich
colors the Points appear in (the matrix represents cells, 0

I was trying to write wrapper for audiorecorder. Below is my
code:
------------------
classdef Audio

this loop should give me for -1 0 and for 1 should give me
a 1, can anyone help me. My code is at the bottom
thanks
p=[-1.0000 1.0000 -1.0000 -1.0000 -1.0000 -1.0000 1.0000

I have a GUI which has graphs in it.
Unfortunately i am neither being able to change the label of
any of the axis ( i have three axis for each graph) nor am i
being able to change the axis dimensions.

I am making this MDP value iteration algorithm and getting
stuck on how to stop it when the difference between the
last value and the older one is less than epsilon. Here is
the code:

I want to use  Java NetBeans IDE (which one can also use for C project development) for writing some C Mex functions. My question is, where to I reference/link to files such as mex.h , matrix.h, mat.h, mwdebug.h and all these other MathWorks files? Where do they reside (folder) ...

How do I end or delete one GUI that is open and inactive at
the back from the one that is active and in front.
PS. These GUI's are not connected. i.e one did not trigger
the other. There was a gui window say GUI_1. It opened GUI_2