Math Forum / Math Software / MATLAB / July 2008

hi all;
What can i put in my program to know : how often does
message('valid characteristics of the region number%d')
appear?

Quick (hopefully!) question:
I've got a 2d matrix of numbers, Z.  When I do bar3(Z) I get
a nice 3d bar plot.  Now, I have another 2d array the same
size as Z called Y.  I want to color the bars according to

This is just a general question regarding how fields are
stored in the handles structure for a GUI. Why are all of
the fields represented by doubles? Do the values have any
specific meaning other than for some sort on indexing?

Hi, I am trying to create a matrix which has a matrix as
each element e.g.:
h=[1:3]'
h(1)=[1,2;3,4]

I am using Simulink and I am trying to make a block that
will  take a 3x3 matrix and an image and do the geometric
transformayion. Basically these are the only commads needed:
tform = maketform('affine', T)

I have a series of datafiles that I import into MATLAB and
call data1, data2, data3...
I then want to be able to call up those data files in a .m
file I've written that looks like this:

Is it possible to insert the current index into the
variable name?

i have to use wavelets in solving an ordinary differential equation.
can u help me? stephi_stoica@yahoo.com

I have a .wrl I developed in V-Realm using Indexed face
sheets that I exported from CAD drawings. It looks fine in
V-Realm Builder but when I open it in MatLAB it gets
distorted, and some faces aren't rendered. Anyone have a

I am trying to create virtual worlds using v-realm builder
2.0. I have two problems:
1) First problem is whenever I import an object(*.wrl) from
object library, I can not see their true colors. Objects

Hi every body;
What can i put in my program to know : how often does
message('valid characteristics of the region number%d')
appear?

i tried to read multiple image files using this command
i got error message. pls help me
for i=1:1:5
c[i]=imread('d:\img\i.bmp')

I'm doing some discrete event simulation using matlab. I
have used cell arrays to attach together information about
entities in the model in a simple and natural way. However,
using profiler tool and talking with some users, I've came

I have to include the "simple" term
m(i,j)= log9(m(i,j)) in my MATLAB code. Unfortunatelly I
cant find any function that calculates the logarithm with
base 9.

I have a simple problem. I have a file that contains information that
looks as follows
x    y
1    8