Matlab

image block transfer
I have a large image in 24-bit rgb format (uint height x width X 3 matrix). I want to paste a sub-image into this image. I'd also like to paint a value into the image using a logical as a mask. This seems impossible to vectorise. picture(y1:y2, x1:x2, 1:3) = [255 0 0]; won't do what I want. picture(y1... 30 Jul 2010 12:58

How to find a particular pattern in an image for a range of grayscale levels
Dear all, I'm am new with Matlab, and have been having some trouble finding help for the following problem: I have a grayscale 8 bit image and would like to locate some features of interest. I am unable to threshold the image as there are other features of the same grayscale that I am not interested in. Therefor... 28 Jul 2010 11:51

How to gather a cell array of strings
Hi Is there someway to gather a cellarray by each row without using a loop (example 1) and without leaving whitespaces between each gathered column? % ============================= A={'One','two';'three','four'}; % Example 1: Loop [Row Col] = size(A); G = cell(Row,1); for j=1:Row G(j) = {[char(A(j,Col... 28 Jul 2010 09:38

Class help text wrapping
Hi Folks I am trying to document some classes I have created, and am strugling with the format of the help text. I would like to add enough comments for each property, but it seems that when the comment stretches over more than one line, it is cut off, so you have to place it in one line. Is there a way to avoid hav... 28 Jul 2010 09:38

project
hi! i am working on the project Water Body Detection. I need to outline the water in the original image(rgb or gray scale). Is there any command for it? I tried with bwtraceboundary, but it was of no use thanks ... 28 Jul 2010 08:32

dynamic cross phase spectrum
Hello, I am working on the data of magnetic fields.I need to obtain the cross phase between two time series. also i would like to know How to dynamic cross phase spectrum between two signals using matlab ... 6 Aug 2010 07:10

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clear (to call as a function) dont work
let's say I wrote and I am calling this function: function ppp clc clear when I am calling it as ppp this function is unable to execute clear (since my workspace is not clear) although when I am executing the function (command) clear from command window it works (workspace is clear) ... any help please? ... 28 Jul 2010 09:38

Symbolic Jacobian
I have a simple question with possibly a difficult answer. The new symbolic toolbox of matlab seems very powerful. One of the uses is to differentiate functions. Subsequently it should be possible to use the differentiated functions as normal numerical functions, but my question is how. I want to use these equations... 28 Jul 2010 09:38

Problems with addframe and Movie
Hi, i want to make a movie file, from the axes in my GUI. There are several rectangles changing there colors. The Problem is, that in the final avi file, it looks very different from the original. Here are two links, the first link is a snapshot of the original axes in my GUI. the second link shows a snapshot from ... 2 Aug 2010 13:39