Matlab

Matrix average problem
I have a 2d matrix called A which has most of the element is zero and i want to find average of matrix I use Average = sum(nonzeros(A(:)))/numel(nonzeros(A(:))); Is it okey? It seems to me okey but problem is i choose maximum value in matrix A is 20 so the average should be also maximum 20. If one could... 9 Jun 2010 06:25

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Calling C Dll in Matlab
How to call C DLL in Matlab ... 8 Jun 2010 10:17

Data structure question
I'm writing data from Matlab to netcdf (.nc) files for archiving purposes. How do I know if the data is arranged correctly in the .nc files. In matlab a semi-colon means new row, but how do I interpret this in netcdf. If semi-colon returns a new row in netcdf then my data's shape is changing. For instance a 2X6 wou... 8 Jun 2010 10:17

Using the timer object in a plotting application
I am investigating whether or not MATLAB can be used to develop real time graphing of data. I have found a way to utilize the timer object to plot data on an axes and I have gotten it to work as planned, however, I am having two issues. 1. The plot has to be able to run continuously, and when I run it for long per... 8 Jun 2010 09:09

Thresholding of cell boundaries
I have to segment the cell boundaries of the image for which i have to first perform thresholding of the curvy white lines shown in the image. http://drop.io/imagecell Please reply soon. Thanks ... 8 Jun 2010 09:09

plzzz help me in plotting radiation pattern for Horn antenna ?????
plzzz help me in plotting radiation pattern for Horn antenna ????? i am following BALANI's ANTENNA THEORY and plzz give me link for theBALANI's MATLAB PACKAGE.. ... 8 Jun 2010 09:09

Timer and GUI Interaction
Hello, I have developed a little application to carry out an animation: a timer object calls a timer function a few times each second and draws some surfaces in a figure. This is complemented by a GUI for turning certain features of the animation on and off and for starting and stopping the timer. The problem: th... 8 Jun 2010 08:02

equivalent of statistica 8.0
i've see the equivalent of statistica 8.0 of regression into neural network is newfit() what is the equivalent into matlab of time series (regression)? Thanks to everyone... ... 9 Jun 2010 10:50

Set interestions/Searching in large Matrices
Bruno, I hate to rehash this, but the code I am using now is inefficient (and you mentioned that this would be a more effective way to bin my data). I have a 3d matrix or values indexed by r,theta,phi (each are 3d matrices). I would like to bin this 3d value matrix conditioned on the three other matrices (r, theta... 8 Jun 2010 08:02