Matlab

Restructuring cell arrays with cellfun
Dear fellow Matlab users, I am trying to solve the following problem: I have a cell array with 500 cells, each cells contains 4 arrays with information (it is basically a cell array and each cell contains a matrix with four columns (column 1, column 2, column 3 and column 4) and 100 lines). I want to use cellfun ... 6 Aug 2010 21:28

GA code
Hello all: I know how to make GA (genetic algorithm) code for unconstrained problems. But I have a problem with equation and inequation constraints. e.g., X1+X2+X3=B Xi>0; i=1, 2, 3 Thank you, JH ... 9 Aug 2010 07:55

Retrieving image from webcam (very slow)
help snapshot "Bluebird " <wlouis(a)ryerson.ca> wrote in message <i3hq7i$232$1(a)fred.mathworks.com>... I need to extract and process images from a webcam. The follwoing code does work however it is very slow (i.e. takes 0.67 to retrieve an image from the camera), the code which i found online is : %%%%%%%%%%... 6 Aug 2010 21:28

Problems saving a simple mat file
Hi, I am trying to save a couple of matrices into a mat file in a Matlab session (version 7.6.0.324), but keep getting the following error: "Warning: Variable 'go_selected_label_info' cannot be saved to a MAT-file whose version is older than 7.3. To save this variable, use the -v7.3 switch. Skipping..." I ha... 11 Aug 2010 15:49

How to get the intersection of two lines?
Hi guys How to get the intersection of two lines in matlab? Thanks in advanced. Zhong ... 6 Aug 2010 20:23

How to link four points to a quadrangle?
Hi guys How to link four points to a quadrangle? I mean how to identify the order of these four points. Thanks Zhong ... 7 Aug 2010 02:54

Creating an EXE from Linux Version of Matlab
Hello, I am trying to create an exe for my fig file. My main problem is i am using Linux flavour of matlab and I am not quite sure on how create an exe file which can run ... 7 Aug 2010 00:44

matrix multiplication_new_user
Good day everyone, I am a new user to MATLAB and would like some help. I am trying to multiply a 2 matrices as follows: Firstly I have 2 matrices A and B: A= [ 91 22 77 31 56 76 9 42 34; 4 5 6 99 54 32 34 54 22; 7 8 9 22 44 55 45 32 87 ] B = [ 3 6 9 ; 5 4 ... 7 Aug 2010 00:44

slow class property access problem and solution
I'm using R2009a and I've recently spent a good deal of time trying to understand why a seemingly simple method was taking FOREVER to run. The bottom line is, I believe, that the built in optimization is lacking in this important case: The speed difference between the fastest and slowest methods is 170 times! I woul... 7 Aug 2010 18:00

Summation
Dear reader, I have a vector with r entries which are imputed previously. I want to PLOT a function v(x), such that v=@x Star(1,1)*sin(pi*x)+Star(1,2)*sin(2*pi*x)+Star(1,3)*sin(3*pi*x)+....Star(1,n)*sin(n*pi*x)+...Star(1,r-1)*sin((r-1)*pi*x)+Star(1,r)*sin(r*pi*x) Is there a simple way to do this using matrix summ... 7 Aug 2010 18:00