Matlab

adaptive threshold
How can I apply an adaptive threshold to signal (one dimension signal). ... 20 Dec 2009 18:01

Matlab Newbie, I need help
Hi all, I'm new to Matlab, this is my first matlab question and i used lots of time to solve it but there are some unknown problem that i cant solve. Question: Write a MATLAB program, in a m-file that determines the solution of the equation 8-4.5(x-sin x)=0 by using bisection method. The solution should have appro... 19 Dec 2009 19:15

convert 3D matrix into 2D
Hi, i still cant find a way to convert a 3 dimension matrix (1x10x3) into 2 dimension matrix (10x3), is there any function in matlab that can solve my problem instead of creating my own code to solve it? thx for your responds :) ... 19 Dec 2009 06:13

Matrix singularity in Pentium 4 but not in core 2 duo cpu
hi, This is something that bothering me recently. I'm trying to run a Extended Kalman Filter that I wrote myself on a pentium 4 cpu. However, everytime I run the code, it will end up the matrix becomes singular after a moment. But, if i load the same sets of data, and run the same code in my other c2d pc, I w... 18 Dec 2009 13:52

Best approximation
I have a bunch of data points (x,y,z) and I know that these points go asymptotically like z = ax + by for some a,b. Is there some sort of "3D" least fit capability in MATLAB that will allow me to approximate a,b given my collection of points (x,y,z)? ... 18 Dec 2009 16:07

Problems
http://farm4.static.flickr.com/3128/2335467761_420942041e_m.jpg image that get from website Need some info on how to convert the eye into some line pixel as show in http://www.irisbiometrics.net/img/iris+code.jpg I currently using mathematical method using sine & cosine term to find the pixel in the pattern of i... 19 Dec 2009 08:21

surf function problem
Hi there, I would like to ask you how can I plot a the following surface: x = linspace(-1, 1, 50); y = linspace(-1, 1, 50); z = (x.^2 + 2*y.^2); figure(1), surf([x' y' z']) The results that i get are not the expected ones. I would really appreciate any help of you Thank you NM ... 17 Dec 2009 13:43

plsregress constraint
Is it possible to constrain the XL predictor loadings from the plsregress function to positive numbers? Thanks ... 16 Dec 2009 22:25

sampling from permutations of 35 elements
Folks, I'm doing a simple calculation that has a little bit of variability associated with the ordering of the 35 terms, therefore I need to run the operation over all permutations to get the standard error of this calculation. Problem is that 35! (the number of permutations) is greater than 10^40, and therefore ... 16 Dec 2009 17:57

how to convert html to pdf
how to convert html to pdf ... 16 Dec 2009 11:13