Matlab

3D Coordinate Transformations (Rotation only)
sorry, I have a 3-D box, at each point there is a intensity(x,y,z). suppose the intensity matrix has m, n, p points along x, y, z. Then size(intensity)=m,n,p if I want to rotate this intensity matrix using euler angle (theta, phi, psi) I understand that the rotation matrix is a matrix 3 by 3, consisting of t... 9 Jun 2010 16:26

UDP high bandwidth application
I am trying to do some high bandwidth processing in MatLab reading a UDP socket. As much as I try, I can't read more than ~32KBps using the code below. Is there something I can do to increase the rate at which I can read the UDP datagrams? Or is this a limitation of the IC toolbox? Using Java I can read at ... 10 Jun 2010 11:07

Minimization Problem FMINCON
Hi am working on a minimization problem. T=Average network delay.......variable N=Number of nodes in the network.....fixed λi,j= Flow on the link i-j....fixed Ci,j,k = Capacity of the link i-j on radio k (or channel k)...variable C= Capacity of node...fixed M=Numbers of channels/radios per node....fixed ... 16 Jun 2010 14:22

Rank of particular data
Hi, Can anybody tell me how I can find out the rank of a particular data in a series 5000 data? It will be very helpful for me, if some one can help me. Thanks and regards Shafi ... 9 Jun 2010 16:26

array compare to matrix
Hello people! I have a problem i can't fix! Imagine that i have a array A=[1,2,3,4,5,6] and a matrix M=[1 6 8 44 7 4] [53 8 3 7 2 8] [1 2 3 4 5 6] [3 5 7 7 3 7] [1 2 3 4 5 6] I want a final array that give... 11 Jun 2010 21:27

Finding the data based on their index
I have two column 'a' and 'b', where 'a' stores the index, for instance, a = [3; 1; 5; 4; 6] (the index nr., though integer, is not continuous) and 'b' stores the data, for instance, b = [0.333123; 0.11233; 0.334112; 1.335353; 0.345323]. I want to extract the data from b based on the index a. For example, I want to... 10 Jun 2010 04:32

GUI keyboard input when zoom in selected
Hi folks, I am using a GUI which I have built in part using GUIDE and which makes use of the tools 'zoom in' and 'zoom out' in the toolbar like in a standard figure. One small problem I encountered is that when the zoom in (or zoom out) tool is selected, the keyboard inputs no longer trigger tasks that I have pro... 9 Jun 2010 14:12

slow uigetfile ! (?)
Here I use function uigetfile for select a file. With R2010a, this command: x = uigetfile('C:\*.dat') display the figure after 10 seconds - very slow (?) with R2009a approximatively 2 seconds (slow...) if I test with free uipickfiles, display figure at < 0.5 second (good!) good except uipickfiles is c... 11 Jun 2010 20:21

Carriage return in mex files
Hi, I'm trying to add a progress bar that works fine in any console, but doesn't seem to work in MatLab. It's in a mex file, that calls the following to refresh: mexEvalString("drawnow;"); However, the carriage return '\r' does not seem to work - I need to return the cursor to the front of the line so that the ... 18 Jun 2010 05:52

parsing a large blob of ascii data
I have a blob of ascii data that i am reading from a tcpip object. The data 6 columns of fixed with ascii and up to 64K rows. i read it in as a <1x5504> char (for just 16 rows). I want to create a 6xM array of cells each containing the fields of the data. I have tried using textscan on the data but it only reads th... 9 Jun 2010 19:48