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Image segmentation problem, need help
That's a cool problem. I would tend towards a solution that involved filling the 'empty' region from your thresholded 3rd image...

12 years ago | 0

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Order cell array
There's a couple of ways to do this... I assume you want the numbers in ascending order. This works, but relies on the stabili...

12 years ago | 0

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Answered
problem with rotation matrix
Your code works fine, but you're just not plotting it correctly. plot(obstacle_shape(:,1), obstacle_shape(:,2)); You m...

12 years ago | 0

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Contour plot of spatial distribution of temperature
I would start by removing the invalid readings: archivo( archivo(:,5) < -999, : ) = []; You need to have a higher (and u...

12 years ago | 0

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Vector against a mirror
From memory... I could be wrong here. Make sure your incoming ray |R| and surface normal |N| (which points out) are both uni...

12 years ago | 0

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Trouble finding end of a column in Matlab using xlsread
Do you mean this? while( ~isempty(alldata{i,4}) && i < (x-1) )

12 years ago | 0

Question

MatLab and virtual memory... Who leaked on my disk?
I ran a big job over the weekend, and got back to work this morning to find it was (quite unexpectedly) only 25% complete. Sinc...

12 years ago | 0 answers | 0

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secd vs sec
Because your data ranges are different. The area underneath the curve spanning |-89.5:0.001:89.5| is approximately |180/pi| t...

12 years ago | 2

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Answered
I have written a code please help me in getting the output .
Is the output wave supposed to be 8-bit? That's exceptionally grungey... I don't use these wave file functions, but I expect t...

12 years ago | 0

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matlab 2011b installation problems
Do you have the whole MatLab installation inside a zip file? Normally it comes with a self-extracting executable called somethi...

12 years ago | 0

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Windows 7 GUI issue
I have absolutely no problem in R2012a on Windows 7 with the following code: f = figure; set(f, 'Position', [0, 0, 1920,...

12 years ago | 0

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How to Convert A Matrix into Excel format
Look at the |xlswrite| function. doc xlswrite

12 years ago | 0

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mysolve help
Does it work? What specific answer do you require? I can offer a couple of things just from a quick glance... Your comment ...

12 years ago | 0

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Save one image as part of a larger image
Let's just assume that all your images are in a 3D matrix and you want to slap them onto a canvas: canvas = zeros(1000, 512...

12 years ago | 0

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Dumb mistakes we make with MATLAB.
Corrupting years of experience in other languages... After using MatLab for several months now, I find that when I go back to...

12 years ago | 0

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Histogram?
It's sorta weird to take the histogram of a 2D image... I don't know what it's going to tell you... Well, maybe it's not weird...

12 years ago | 0

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Matching intermittant data to regular time base
I'm just throwing this out there... Here's what I do to match my weather data to a specified time scale. I do actually throw a...

12 years ago | 0

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importdata skips the last few rows?
That's odd... Confirmed in my own 2012a. It appears to be trimming all the entirely NaN rows from the end of your data. I...

12 years ago | 2

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Urgent! .....Compass plot
Why is this urgent? Try this: set(gca,'xdir','reverse') Or if you want the zero on the right as normal, do this inste...

12 years ago | 0

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reducing resolution of an image
Think about it... If you half the width and height, that means each group of 2x2 pixels becomes one pixel. You average the p...

12 years ago | 2

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Limit to Textscan?
Thanks for clarifying what your data looks like. I assume that comma immediately after the '4' is a mistake. You could proba...

12 years ago | 0

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plotyy how to make yaxis align at zero
Well, if I plot some test data: [ax, h1, h2] = plotyy([1 2 3], [-1 5 6], [2 3 4], [-2 1 -1]/2); I get back two axis hand...

12 years ago | 0

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12 years ago | 0

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Limit to Textscan?
I doubt there is a limit for the tiny numbers you're talking about. What I expect has happened is that |textread| encountered...

12 years ago | 0

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how to delete NaN from a column of data
If all you want is the mean, just use |nanmean|: help nanmean There are a bunch of functions that explicitly ignore NaN ...

12 years ago | 0

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12 years ago | 1

Answered
Detect different colors in RGB colorspace
Are you trying to detect a specific colour? All you are doing here is thresholding, and your code is going to detect anything t...

12 years ago | 0

Solved

Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

12 years ago

Solved

Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

12 years ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

12 years ago