Math Forum / Math Software / MATLAB / October 2008

I am pretty inexperienced when it comes to matlab and could use a little help with a seemingly simple problem.  Basically I have a matrix of numbers and would like to see how well correlated the numbers are at any given spatial lag.  In other words the zero-order score would the ...

Hi there. I want to visualize the logged attitude and the position of a model aircraft within matlab in a 3D plot. So I started to create a very simple model by creating some cylinders and so on. So now I have a vector of mesh handles which represent the aircraft. But how can I ...

I am doing some optimization and there i am calling a simulink model.
According to the results i am changing my inputs and rerun the model.
There the optimization tool is the fmincon. It calls sim at every
iteration and sim function by itself uses more than the 80% of the

How to generate a 10X10 matrix A=[a(k,l)] where a(k,l)=sin(k)cos(l) using a loop free matlab code.

I'm trying to fit a curve to my data using 'curve fitting toolbox', but I can't get any result from.
here is my data:
x=[0 2 50 106 250 500 1000 2000];
y=[0 0.03 0.17 0.279 0.735 0.921 0.994 1.002];

I'll be grateful if someone can help me out.
I have segmented bmp-images. Now I want to label (mark) each pixel of
each image, so that pixel with the same color (rgb) become the same
label. The label have to be an integer value.

Hey all,
I have a C++ code that puts in one variable and updates it at a freq
of 50Hz.
I am trying to use this variable in SIMULINK.

Hello MATLAB Central Community Members –
I am pleased to announce that early today MATLAB Central replaced our existing File Exchange interface with a new design. This entirely new application was built and is hosted by the MathWorks, Inc. We will no longer be using our ...

Can you?  if so how?

Having two matrices a and b like in the example below:
a =
    3     3    -5
    4     5    -6

Does anyone have a Frequency Response Analyzer(FRA) block
for Simulink. I need to do an FRA by simulation. Simulink
only supports FRA through linear analysis. Willing to buy
block if someone can point me in the right direction. I

Is it possible to execute a piece of matlab code from a java application?
Same question but for C#?

A Matlab GUI program, compiled under Matlab R2007b in openSUSE 10.3, was put on Workstation A. (Compiled on Workstation B and transferred to A).
Workstation B, also with openSUSE 10.3 system, tries to remotely access (telnet) the generated standalone application on Workstation A ...

Just a quick reminder that our Fall 2008 contest starts next Wednesday, November 5 at noon Eastern time.
Better catch up on your sleep this weekend to get ready for the event!  :-)
See you soon!
Helen Chen

u=[5.65657
4.09474
2.98886
3.74147