How can I calculate the empircal CDF from an empirical PDF when dimensions are greater than 2?

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Greg
Greg 2014-7-28
评论： Greg 2018-2-23
I would like to calculate the empirical cumulative distribution of a data set with more than 2 dimensions. The only examples I have been able to find are for bivariate data (using hist3 and cumsum). Below is an example 3 dimensional PDF. I would like a robust solution that can accommodate any number of dimensions, if possible. Any help would be very much appreciated. Thank you.
sPDF(1,1,1) = 1;
sPDF(2,1,1) = 2;
sPDF(1,2,1) = 3;
sPDF(2,2,1) = 4;
sPDF(1,1,2) = 5;
sPDF(2,1,2) = 6;
sPDF(1,2,2) = 7;
sPDF(2,2,2) = 8;

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Star Strider
Star Strider 2014-7-28
See if the mvncdf function and its friends do what you want.
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Peter Mills
Peter Mills 2018-2-23
What if I want to calculate the empirical cdf from an empirical pdf. Basically the question above but with data containing NaN's. I've tried cumsum but I get NaN's for every value after the first NaN value
Greg
Greg 2018-2-23
You could try interpolating the NaN values first. Something like the following: inpaint This one may also work: inpainting Or you could try fitting a neural network to the data and predict those NaN values.

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