Math Forum / Math Software / MATLAB / July 2008

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

Hi experts,
I use a m-file to build a figure with data from simulations
in Simulink. Depending on the screen width, my figure can
only show about 1500 pixel (i.e. there are only 1500 values

I am trying to estimate missing data from facial images. To do this i am
taking advantage of the known covariance of the pattern class. Using the
Lagrange multiplier technique i am forming the unknown Matrix:
B=UP' * inv([PUP'])

VisualDSP++ 5.0.2.0, R2008a
When I try to compile my model (using CTRL-B), I get the
following error:
Error building Real-Time Workshop target for block diagram

ich habe eine Text-Datei, die Zahlen mit Komma enthält.
Wenn ich diese Datei mit Load-Befehl öffne, Matlab betrachtet jede Zahl zwei
Zahlen eine vor u. die Zweite nach dem Komma.
meine Frage wie kann ich diese Datei richtig öffnen

I am using the round.m function to calculate a simple
floating number. However, I cannot figure out why the
following two ways of calcaulating the same thing give me
different answer. Can anyone help?