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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

12 years ago

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Write data to spreadsheet.?
I suppose you could read the old data into MATLAB, concatenate and then overwrite old .xls file? Maybe not the fastest solution....

12 years ago | 0

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what is the difference between noise and outlier????..
I guess noise causes outliers, but not all outliers are caused by noise :)

12 years ago | 0

Question

HISTEQ normalization range not clear
When I tried to equalize an image using histeq I got an unexpected result. The original has values in the range 0-199 and the ou...

12 years ago | 0 answers | 0

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how to normalize two discrete time series signal to same time duration???
Use interp1. Or create a fit using fit or polyfit. But beware the difference between interpolation and extrapolation.

12 years ago | 0

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Symmetric Positive Semi-definate Covariance matrix using mvnrnd
isequal(sum(eig(SIGMA)>0),length(eig(SIGMA))) Why does eig(SIGMA) give negative eigenvalues?

12 years ago | 1

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how can i make a function which will return the largest and the second largest component?
Or: if sum(C==max(C))==1 second = max(C(C<max(C))); else second = max(C); end i.e. test if the maximum i...

12 years ago | 0

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Normalizing data
Dividing by the maximum does not correct for offset. So only ranges 0-X go to 0-1. If his column has a negative or nonzero minim...

12 years ago | 0

Question

HISTEQ default not consistent with syntax?
If I have an 8-bit image IM (e.g. cameraman.tif), why does histeq(IM) produce a different result than histeq(IM,ones(1,256))?? ...

12 years ago | 1 answer | 0

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histogram and histogram equalization of an image without using built-in functions
I gave an example here: <http://www.mathworks.com/matlabcentral/answers/23228-i-want-to-know-if-we-can-implement-histogram-equa...

12 years ago | 0

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I want to know if we can implement histogram equalization without the histeq function?
4 bit grayscale example: grayLevels = (0:15); %Histogram of image, counts per level: grayHist = [0 0...

12 years ago | 0

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Low level visual equalization of images
I'm assuming the resolutions are identical. If images have different content it's hard to give them equal parameters. One coul...

12 years ago | 0