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Plotting a 3-D Function with Interpolated Shading
[X,Y] = meshgrid(linspace(0,1,25), 0:.024:0.5); Z = cos(2*pi*(3.*X - 4.*Y)) ...

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How can i compare 2d shapes in mat lab?
In the below example, I'm assuming that you're going to be working with RGB data. That is, I'm assuming that your images aren't ...

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Transpose
Write a MATLAB script in order to convert a random length row vector (v) into a column vector.

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Moving between different GUI's (bypassing any intermediate GUI)
Others may be able to comment on the best way to do this using appdata. I have found, however, that simply passing the handles s...

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Concatenate matrix into 4 quadrants for given number of iteration
If given a matrix and number, output should be its concatenation like wavelet for given number of iterations. Example a ...

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Diagonal & Anti-Diagonal Matrix: Easy
Create a matrix as shown below from "magic" square. For example: if input x=9;then use mgic(x) and create the matrix...

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Calculate the peak value of square wave
Given the peak value of sine wave, calculate corresponding peak value of square wave, if both have same RMS voltage.

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Square wave average calculation
Given its peak and duty cycle, calculate avg value of square wave

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Find the next prime number
Find the next prime number or numbers for given n. For example: n = 1; out = 2; or n = [5 7]; out = [7 11]; ...

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Ohm's Law
Well its Ohm's law... So V = IR! I will give two of the three values, such as V and I or I and R and you have to return th...

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update GUI from from call back
Does this do it? set(handles.listbox_handle,'String',contents{handles.Selection}) Also, I'm fairly sure that you don't n...

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Why does Matlab display different pixel values than other programs?
Shot in the dark here, but could it have anything to do with those programs using 0 indexing while matlab uses 1 indexing? Paint...

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Plotting matrix coordinates with indices?
If I understand correctly, I think *imagesc* would work: M = eye(50); %example matrix imagesc(M)

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Is it me ? or something else ...
Others have addressed the other topics of this post, but I would like to comment about what I see as "reasonable expectations" f...

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Tune your guitar
Given an input string with the scientific pitch notation for standard tuning ( <http://en.wikipedia.org/wiki/Guitar_tunings#Stan...

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how to delete certain rows that contain string
So you want to delete any string that contains the string 'A12-1'? Or is it more general than that? Assuming it's just that one ...

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Woodall number
Test whether the input is a Woodall number: <http://en.wikipedia.org/wiki/Woodall_number> _Please do not cheat by simply chec...

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Calculate the Hamming distance between two strings
Inspired by a similar Cody problem found <http://www.mathworks.com/matlabcentral/cody/problems/93-calculate-the-levenshtein-dist...

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Draw a line between two points
P = [1 5.2; 2 0; 3 0; 4 0; 5 9.9; 6 0; 7 0; 8 12.1]; posP = find(P(:,2)); %find where y values aren't zero. C = polyfit(...

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deleting part of a string
Here's another answer, just in case the characters you want to keep don't fall in sequential order. If they don't, *regexp* with...

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Dice face matrix!
This is dice simulator, but instead of making a random die number, you will receive an "pre-rolled" number in and spit out a mat...

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Create an 'arrow-head" matrix
Write a function that when given an odd number, produces an arrow-head function pointing to the right. Examples n = 3 ...

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Compress strings (not springs)
Please remove excess space, limit one space between others, and no space before punctuation marks. * For example, 'Trendy , ...

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Sort numbers by outside digits
Sort the array so that they are sorted as if their value was a 5 digit number made from the first three and last two digits of t...

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make a GUI for an existing programme
Whether you copy and paste your code into a callback of your GUI or call it from within the gui, it's going to require some modi...

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the return of the hackathon
You might have found a solution to our <http://www.mathworks.com/matlabcentral/cody/problems/205-hackathon-the-beginnings previo...

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Better bullseye matrix
<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...

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plot and calculate error bar
It's really difficult to provide any further help without you offering a more thorough description of your problem, but the *err...

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Einsteinium-253 decay
Radioactive Einsteinium-253 has a half-life of 1,768,608 seconds. Given 1000mg of Einsteinium-253 at t=0 days, how much is lef...

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Compute the dilation of a binary image
A basic operation in image analysis is the dilation. Given an image where each pixel is either on or off (black/white, true/fals...

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