Matlab

row operation
Hi Friends, I have a problem with Matrix operation. I have a matrix of dimension 21rows by 386 columns. I want to make a new matrix with first 10 elements of first row as 1st row of my new matrix, second 10 elements of first row as 2nd row of my new matrix,.......38 rows and last row has only six elements. Same thin... 31 May 2010 21:51

root solving with staircase discontinuities
Hi all, I'm trying to find the roots of a single variable equation with discontinuites, something like adding a "round()" to a smooth function and getting a staircase trend. fzero works OK, but fsolve returns the cryptic error: Optimization stopped. Unrecognized exitflag input to createExitMsg. presumably... 30 May 2010 21:56

modelling binary psk31 system
hi, i'm trying to model a binary psk31 (31= Baud rate) transmission system so I can analyse and see how it works. I started by modelling a BPSK system which works ok, and gives me same probability of error as the theoretical graphical representation of Error Rate vs Eb/No. The Model is in d following order (using simu... 30 May 2010 20:51

Gradient descent, anything better than golden section line search
Hi This is a long story, I make it short: I am working in a project where I need to find a matrix defined by a third degree polynomial, the solution can be found iteratively using a gradient descent technique, I am using the golden section line search already implemented in matlab (with the code described below). Th... 31 May 2010 01:09

Gradient descent
Hi This is a long story, I make it short: I am working in a project where I need to find a matrix defined by a third degree polynomial, the solution can be found iteratively using a gradient descent technique, I am using the golden section line search already implemented in matlab (with the code described below). Th... 30 May 2010 18:41

احصل على ماستر كارد MasterCard مجانا هديه
ÇÍÕá Úáì ãÇÓÊÑ ßÇÑÏ MasterCard ãÌÇäÇ åÏíå http://www.agd3as7ab.com/vb/showthread.php?t=97... 30 May 2010 18:41

.tif images without the need to crop
Hi folks, using plot() fig1 = gcf saveas(fig1, 'filename.tif') I come up with a fine resolution .tif picture that has, however, rather much blank space left around the plot. I fancy this has not much to do with the image saving or writing commands, because the resulting .tif picture just precisely corresponds ... 31 May 2010 15:16

Stat question
Hi i have stupid question ... I try to use anova in matlab I have typed this command stats = regstats(y,x,'quadratic','all') and it work pretty well. But i don't know what is "pva:l in F-and T-stat and what is "se" in T-stat .. can someone help me ? ... 1 Jun 2010 10:50

Plot 3D
Hi there, I posted something before but did not make it a clear, let me explain my problem. I want to graph a 3D plot in Matlab by assembling "slices",(like frames in a movie) Example: A = [1 2 3 4; 5 6 7 8; 9 10 11 12]; B = [1 2 3]; B corresponds to the common x value in each slic... 3 Jun 2010 17:53

Extract a mean spectra from selected ROI from a hyperspectral image
I have a Hyperspectral image with dimension (5001, 257,64), It means 5001 samples, 257 lines and 64 bands. I want to create a ROI from the image and want to find the mean spectrum from this ROI. I have approached as below: imshow(img.rad(:,:,50),'Border','tight','DisplayRange',[img.mindrange,img.maxdrange],'XData', i... 31 May 2010 09:45