Problem

Get ranking of a combination
I have the numbers pulled without replacement from the set [1 2 3 4 5 6 7 8 9 10 11 12 13]; They are then ordered from least to...

9 years ago | 1 | 45 solvers

How do I delete empty array among populated arrays?
You are probably better off not having variables named like this in the first place. <http://www.mathworks.com/matlabcentral/...

9 years ago | 1

How to avoid for loops using compact array notation?
I find it very unlikely that this will be the bottleneck in your code. Have your run this through the profiler to confirm that ...

9 years ago | 0

How to have random groups( of 2 elements) from a squared matrix?
There are 24 four connected pairs. Three per row, three per column. I would generate a random integer from 1-numel(A) I wou...

10 years ago | 0

Recognizing shapes in (binary) matrix
If you KNOW that you are either dealing with a line or a circle, then could you look at the MajorAxisLength and MinorAxisLength ...

10 years ago | 0

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find subset of a set
>> all(ismember([1 3], [2 4])) ans = 0 >> all(ismember([1 3], [1 3 2 4])) ans = ...

10 years ago | 1

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Allow Question Markup Capability with fewer Reputation Points
You have those privileges now on your own posts. That is a list of suggested things to do to OTHER people's posts when you ge...

10 years ago | 0

Sign switching in a sequence
Look at the diff command. It will subtract each element from the next. Look at the sign of that calculation and you will be al...

10 years ago | 0

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How to make a mean image out of several images converted into a density map
The image you are dealing with is really just a matrix of numbers where the numbers represent the density. If every image is th...

10 years ago | 0

Efficient implementation of a functions with vector arguments
Do not worry about efficiency until you know it is a problem. I think you might be surprised where the bottlenecks in your code...

10 years ago | 0

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how to customize a colorbar?
Colorbar should not have any bearing on a line plot. Maybe you mean the 'colororder' property of the axes: >> get(gca, 'colo...

10 years ago | 0

Use of timer: what's the code to indicate that its period of time is expired?
It is not clear what you are asing, but this is a primer on timers. <http://blogs.mathworks.com/videos/2008/05/05/advanced-ma...

10 years ago | 0

Creating a solid/surface of revolution from discrete data?
The profile you give represents the radius. Set it to whatever you want. Then you can translate the surface by adding a consta...

10 years ago | 0

How to set background as black without appearing in colorbar?
Axes have color. You could set the color of the axes. Then you can put NaN in the image on any pixel you want to be 'empty'.

10 years ago | 0

GUI AXES Object detecting
You are looking to set callbacks on the lines. This is similar: <http://blogs.mathworks.com/videos/2008/01/28/practical-ex...

10 years ago | 0

Check each pixel for a specific color
MATLAB uses ones based indexing. There is no 0,0 element. Try starting at 1,1. A better way is like this: a = [11 22 3...

10 years ago | 0

Rock, Paper, Scissors GUI?
<http://blogs.mathworks.com/videos/2013/02/06/introduction-to-gui-building-with-guide-in-matlab/ Intro to GUIDE Video> Check ...

10 years ago | 0

A problem drawing a graph in matlab
Why not use the built in hist command in MATLAB to get a histogram?

10 years ago | 0

Problem changing FaceColor in contourm
It has been my experience that when you see a problem where the code works in debug mode, but not when run all at once, you need...

10 years ago | 0

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Merge imagesc and plot into same figure
i = magic(10) imagesc(i) imagesc(10:10:100, 10:10:100,i) When you call imagesc, if you do not give an X and Y vect...

10 years ago | 0

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How to get the pixel values of an image in binary form?
>> <http://www.mathworks.com/help/releases/R2013a/matlab/ref/dec2bin.html doc dec2bin> This will give you the binary as strin...

10 years ago | 0

Multi window Gui problem
<http://blogs.mathworks.com/videos/2011/11/23/passing-data-between-guide-callbacks-without-globals-in-matlab/ Passing data betwe...

10 years ago | 1

how to implement loops in a sturcture
There is a lot of indexing and confusion going on here. I recommend breaking down the problem into smaller, testable pieces. ...

10 years ago | 0

Plot figures in property editor mode automatically
http://www.mathworks.com/help/releases/R2012b/matlab/ref/plottools.html These tools will 'remember' how they were configured ...

10 years ago | 0

how do i retrieve the values from a plotted graph?
>> h = plot(rand(1,3)); >> get(h,'ydata') ans = 0.534064127370726 0.089950678770581 0.11170574419320...

10 years ago | 0

How to relate or understand this code with math formula?
It looks like it is taking the delta between every vertex in the list and a specific vertex (a or b). It is then squaring t...

10 years ago | 0

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Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

10 years ago

how can i display the image in GUI??
<http://blogs.mathworks.com/pick/2007/10/16/matlab-basics-setting-a-background-image-for-a-gui/ Video on setting an image in a G...

10 years ago | 0