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how to count the number of points in a scatter plot

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Thishan Dharshana Karandana Gamalathge
评论： Thishan Dharshana Karandana Gamalathge 2017-2-9
Hi,
I made a scatter plot using two columns where there were a few NaNs. Those rows were automatically get eliminated when I use the "scatter" command. Now I want to see how many data points on the scatter plot. Please help me with this. Thanks

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Image Analyst
Image Analyst 2017-2-9
How about using isnan() on the x and y to find out which are not nans?
numberOfGoodPoints = sum(~isnan(x) & ~isnan(y))

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