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I have an numpy array which I save to a image using savefig(). Then I read it in my code and the image is multiplied bigger than my original aray as dpi while saving is 100.
Is it possible to use dpi to make the image size larger and get it in a numpy array without saving and loading it again?
Sounds like you want to take an array of size (a, b) and scale it by an arbitrary factor s so that the resulting array has shape (a*s, b*s)?
There are several ways of doing this as far as I am aware, but perhaps the best resource is the cookbook page on rebinning: http://www.scipy.org/Cookbook/Rebinning
HTH