The CDF quantifies the probability of observing certain pixel intensities. Your task here is to plot the PDF and CDF of pixel intensities from a grayscale image. You will use the grayscale image of Hawkes Bay, New Zealand (originally by Phillip Capper, modified by User:Konstable, via Wikimedia Commons, CC BY 2.0).
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p = evcdf (x,mu,sigma) returns the cumulative distribution function (cdf) for the type 1 extreme value distribution, with location parameter mu and scale parameter sigma, at each of the values in x. x, mu, and sigma can be vectors, matrices, or multidimensional arrays that all have the same size.
I am taking two sample GEO- GSE73486. There is total 6 sample in combination of two group i.e 0Gy and 8Gy Cells, and in each sample we have 3 column. when i tried to plot the volcano plot is dent show any unregulated gene/probe.