Matlab

reconstruction of cell array
hello to the community, I have ended up with a cell array that looks like this: A = [5x1 double] [5x30 char] what I would like to do is expand each of the two elements (note that these matrices have the same number of rows) and get the same result as in: {A{1,1}(1) A{1,2}(1); A{1,1}(2) A{1... 26 Jun 2010 03:18

Plotting PAM signal
Hey there I have been looking around the Communications Reference Guide. I am trying to plot a PAM signal after doing the PAM modulation. I can't seem to be able to find anything that can help me. Here is how I am generating my PAM signal: M = 2; randSeq = randint(1, 256, [1, 0]); h = modem.pammod; h.M = M;... 26 Jun 2010 16:18

ycbcr skin color for simulink
hey! I have a problem about simulink for ycbcr inverter i want to made ycbcr color (cb<=125)=255,(cb~=255)=0 and (cr>=137)=255,(cb~=255)=0 but i can't find the 'block' set up threshold how can i find the block and set up threshold ... 26 Jun 2010 03:18

Plotting cost function in Linear Regression Analysis
Hi, I'm trying to plot a mesh for the different \theta values (cost function) for my linear regression analysis. Just for a reminder, here's the definition of the function (assume t = \theta): J(t) = 1/2 * \sum[i=1:m] { ( h_t(X^i) - Y^i ).^2 } (Where X and Y are the input and output variable matrices and... 26 Jun 2010 02:14

sparse matrices,characteristic polynomial
I face the problem of getting NaN values for characteristic polynomial coefficients when I use poly function of the matlab for a 270x270 sparse matrix. Plz suggest some ways to overcome this problem. ... 28 Jun 2010 10:35

R2009a "Out of Memory" problem on WinXP SP2
Hi, I've been trying to load LGBP enocded local histogram information of about 1000 images into a cell array. Each image is Gabor filtered for 5 scales and 8 orientations so we have 40 Gabor images, and then each Gabor image is divided into 64 parts and local histogram is extracted from them. The size of the histogr... 28 Jun 2010 15:02

double integartion of a data matrix
Hi, I have two data matrices: Pi and P which are functions of w1 and w2(frequencies). I want to perform the following double integration: int(int(abs(Pi(w1,w2) - P(w1,w2))the whole square)dw1)dw2) where the limits of both integrals for w1 and w2 are 0 to pi. How should I do it? Thanks ... 26 Jun 2010 01:09

Cluster separation in wave_clus
In wave_clus, is there any way to know how well the clusters are separated (like p value or some other index), using both WT and PCA? Thank you ... 1 Jul 2010 01:17

How to obtain the parallized cpu time?
Hi, all. As we know, we can obtain the running time using the following procedure start_time=cputime; end_time=cputime; run_time=end_time-start_time; However, when we turn to the multi-CPUs computer and run some parallized program, e.g. CPLEX, can the statement "cputime" still give the right parallized runni... 26 Jun 2010 00:05

Column Operations Matlab
i need create a function to chage the columns example 1 2 3 3 2 1 4 5 6------------------------>6 5 4 7 8 9 9 8 7 this is my code: function invier=cambifil(A) [f,c]=size(A); for i=1:f; for j=1:c; A(i,c-j+1)=B(i,j); B(i,j)=A... 26 Jun 2010 14:06