Matlab

Finding the index of an element in a cell
Hello, I've been trying to come up with some code for finding a specific element adress of a given cell vector without looping through each element. For example, L = {'L','L','L','L','L1','L2','L','L'}'; r = someFcn(L); I want the position of L2, like r=6 (line 6 and colun 1). I am trying to find if there is... 14 Jun 2010 16:14

Move 3d object with wiimote..
Hi all.. I need some help in here. I'm trying to move 3d figure in matlab with my wiimote so it can roll and pitch. I'm using Wiilab (http://netscale.cse.nd.edu/twiki/bin/view/Edu/WiiMote). I success to move the 3d figure with a wiimote but it's not perfect. When wiimote's rolling 90 degree (or -90 degree) from starti... 11 Jun 2010 22:32

Random Generator through mex
Hi I have a matlab function, "getData" which has a random generator in it. Whenever I call the getData function like this: [A,b,xs,xsn] = getData(2,4,1,0,1,0,0,200) <- the last parameter is the seed if I have a the same seed at every call I get the same result, which is normal. But when I call getData throug... 14 Jun 2010 12:52

Object length-width measurement
> If you want to plot the major axes of the ellipse, I can't help you. I'm trying to do the same myself and can't figure it out! Only the length, not the co-ordinates of the axis are in the output. But surely this info has to be available to obtain the orientation of the major axis!! If anyone has any suggestions let ... 11 Jun 2010 22:32

Problems initializing structure of structure.
The idea is to create a structure that has fields that can also be structures. It's not clear from the manual whether this can be done since in the struct documentation they specifically state that the field values can either be scalars or cells but I have done it in the past so it seems to be allowable. The prob... 12 Jun 2010 01:47

Please see what is wrong with my frequency domain multiplication.
I have a time domain signal, which has two mixed frequency sine wave. 350Hz and 700Hz. I did FFT of this signal and be able to see the spectrum in frequency domain. however, I made an array which contains same length as that signal. I want to this array will be the high pass filter which ones everywhere except the zero... 14 Jun 2010 22:55

image processing
hey i want to do some image processing stuff using matlab...nd i am new to matlab so dun hav much idea of it... i want do divide my screen into four equal quadrants..cud sum1 plz help me in dis..?? ... 16 Jun 2010 11:02

syntax for the plotting of multiple curves
Hello All, Simple problem: every column of an 81x128 matrix (let's call it A) is a trajectory that I'd like plot against the same coordinates values (in an 81x1 matrix called t). I'm sure that there's a simple way to do this that doesn't involve me writing out plot(t,A(:,1),t,A(:,2),...,t,A(:,128)); expli... 11 Jun 2010 19:14

How to create 3D mesh for Sphere
I'd like to create a rectangular mesh of a sphere, and a tetrahedral mesh sphere. how to do it? I will use it for presentation. Additional info: 3D regular mesh is used for Finite difference time domain computation, tetrahedra mesh is used for finite element method. Thanks. ... 12 Jun 2010 03:56

real time analog input and output
You are using the DAQ toolbox? The fastest way to accomplish this might be a getsample() followed by a putsample() "lior " <liord2(a)gmail.com> wrote in message <huu8jk$458$1(a)fred.mathworks.com>... hello, i'm trying to get a code which will continuously sample an analog input (microphone) and then output the s... 11 Jun 2010 19:14