Math Forum / Math Software / MATLAB / July 2008

I have many matlab files with comment lines at the
beginning. With the syntax 'help <m_file>' you get these
comment lines. This is all well known of course, but I have
some files which seem to be coded in the same way but which

  I am trying to parse some data that looks like:
bfleft1=0
bfleft2=378
.

I have an N x 3 matrix and I would like to find the mean of values in
column 3 grouped by unique rows formed from the values in columns 1 and 2.
For example the following N x 3 matrix :
1 2 3

Good afternoon,
I have an executable that I am running through the dos
function. The file was compiled using VC++ and outputs
several lines to the console to give the user an idea of

I have a problem with axes_GUI.
To solve it,I tried many ways which I have got from this
forum or others, but i couldn&#8217;t my problem. Please help me.
The problem is;

I'm new to matlab, and could use some help.  There are a
couple questions I have.
I'm reading .csv files using csvread.  The files contain
time series, and data columns, and may be of varying

I am writing a GUI with dynamically updating components and
I need them to be generated from a button callback.  I have
written the function and the pushbuttons will render, but
the panel I need to create will not.  Any ideas?

Hi,
For my job i need to be able to have an array of different
images. i know the imread() function will read an image. but
i need to read/save multiple images and my boss wants them

I have these few lines of code which im sure i can make a
lot more efficient, but im really not sure how. I dont
really know how to vectorize this for loop, or if it can be
vectorized. here is the code:

I'm new to using the Matlab FEX, and am just curious as to how to get
the .m files downloaded from the FEX to work in Matlab.
Thank you,
mb

I have an m-function that uses persistent variables to store internal
states.  I'd like to be able to call multiple instances of this
function with their own internal persistent variables.  Is there an
expedient way to do this?  A possible but inelegant way would be just

Hi
I have a graph
x=[1 2 3 4 5 6 7 8 9 10];
y=[1 2 3 6 5 7 7 8 8 9];

I am new to Matlab, and I am wondering if someone here can
help me with scatter plots.  
I have some code that computes some energies, etc., and I
created a simple scatter plot of a dependent variable

I need to do something similar to this:
a=1;
b=zeros(1,5);
b(2:4)=a;

Is there a way to use the built in property inspector to
modify the properties of your own user-defined class objects?