Matlab

header in matrix
Hey, I'm exporting a matrix with dlmwrite to txt. Now I'm trying to set a header on top of it.. something like the example here: text = [average, std, cv, min, max] data=[ 10, 5, 3, 1, 10; 10, 5, 3, 1, 10; 10, 5, 3, 1, 10; 10, 5, 3, 1, 10;] the output should look like: ... 4 May 2010 06:48

char to string
I have a file name, which is a character array, and i want to place this name into a matrix. To do this, i've tried to convert the char array into a string. However, i have not found any command that can do this easily. So, is there an easy command to convert a char array into a string, or to convert the elements o... 4 May 2010 14:33

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vectorise!
The reduced speed is caused by the double loop and the if-else statement inside it. As it is, you do not take advantage of the vectorised capabilities of pdist. What I would do is: 1. calculate all distances regardless of class with a single instance of pdist. 2. reshape the output vector into NxN matrix form with sq... 4 May 2010 06:48

Reading Large Gzipped file
please see http://www.mathworks.com/matlabcentral/newsreader/view_thread/280855#740629 ... 4 May 2010 06:48

How to put the image in to GUI!
Hey guys! I'm going to build a little project about poker dice game using GUI. But there are a some problem with my project. I can't display the image when I press the button. There are an axes and a button in my GUI. * The code in button Callback is: handles.dice1=1; *The code in axes function is: if ( handles.d... 4 May 2010 11:11

Discussion on overhead when calling java functions
Hi. For the last couple of years now, I have been running an algorithm that I coded in java from inside matlab. It takes two matrices of up to 1000x1000 elements and returns a java object containing three matrices of approximately 100x100 elements each. Yesterday I was in a debate about the efficiency of my algorit... 4 May 2010 05:43

ARX modeling inaccurate
I think I have trouble estimating an ARX model for time series data in the frequencydomain or I'm just having trouble with the bode command. I'm trying to obtain a (overly?) simple model for powerline noise and hence the model is focusing on the surrounding of the two main peaks at 60Hz and 180Hz. This is the code I'... 4 May 2010 05:43

Numerical Intgration
Hello ; i want to do a numerical integration of a signal. The latter is a raw data (not an explicit function like f(t) = t^2). The point is that I need a vector as output and not only one value . In other words, I have a signal as input , and I should have a signal as output. Do you have something to help... 4 May 2010 11:11

How to use ODE23tb to solve the problem with lower/upper output limits?
Dear all, I want to solve a set of stiff differential equations and some of the outputs must be in the range of lower/upper limits. By Simulink (Version7.0), I can solve this problem by simply choosing the 'ode23tb' solver, checking the 'Limit output' box and filling in the upper/lower saturation limits of the in... 4 May 2010 10:04