Matlab

Identify colors in an RGB image
I would like to generate a histogram with the colors present in an RGB image. Specifically, that image is and addition of two other images: one that I define as the red path and the other is the green. So I end up with, red, green, and shades of yellow from overlaps in the images. What I would like to eventually... 5 Jun 2010 12:30

Dividing image to sub-blocks by dct2 and for each keeping only fixed set of coefficients.
Hi everyone I would like to write an algorithm for solving this question. Could you help me with writing a script. 1)I want to sub-block a 512x512 image to 8x8 sub-blocks 2)Transform each block using 2-D DCT( with dct2 command) 3)For each sub-block I want to keep only a fixed set of 10 coefficients and set others to... 5 Jun 2010 02:47

neural network
hello,everybody I m working in the field of prediction through neural network . can any one suggest me that how the data should be divided for testing and training .Is there any pattern to divide the data or is it randomly 80% and 20% for training or testing . For my problem I have total 7x 225 data sets i.e. 75 ... 5 Jun 2010 14:41

Fitting a (hyper)ellipsoid to data
Dear All, I have a (hopefully noise free) collection of points which should all lie on the surface of an ellipse / ellipsoid / hyperellipsoid depending on the number of dimensions I’m working in. I also know the center of the data should always lie on the origin of the coordinate system. Can anyone please of... 7 Jun 2010 04:12

code obfuscation (no p-code is not enough)
I am looking for a good code obfuscator, I have seen a thread about obfuscation where p code was suggested, but I have found out that users can just set breakpoints in p files and use whos to see all variable names, variable contents and even step through the code. Unfortunately this is not enough protection for our so... 4 Jun 2010 07:00

Data points from line
Hi, I have two 3-D points from which I can create a line using plot3. I would like to be able to extract a number n data points (equally spaced) that lie on the line between these two given points and store them in an n x 3 matrix. How can this be achieved? Thanks! Thomas ... 4 Jun 2010 07:00

NN testing code
I have written this NN to classify different cases. Simulation is excellent but I could not get the required target during the testing. Please let me know your suggestion. I am desperate to solve this problem due to submission of my postgraduate final year. Regards This is the Matlab code Inline Attachment Fol... 12 Jun 2010 18:11

sum rows by attributes
Hi all, I'm dealing with a geographical analysis over a large territory. I have an excel spreadsheet which contains all the buildings (in a column), the municipality they belong to (other column), other informations in other columns like roof surface area of each building etc.. What I would like to do is to sum ... 7 Jun 2010 05:16

Try Free Project Management Software
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Matlab do parellel computing or not ?
I have a question and I can't find the answer on the web. So I would like to ask? I'm programing with m-file, and in that file, there are two statements: set_param('PID_Motor','SimulationCommand','start'); pause(0.5); I think after the first statement, Matlab will start to work with simulink file "P... 4 Jun 2010 04:50