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John Martinez


Zenitram Capital

Active since 2011

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How to plot a 3D Histogram
I have a series of ordered pairs (X, Y) and I want to plot a 3D histogram but I don't know Z, their probabilities. any suggesti...

12 years ago | 2 answers | 0

2

answers

Answered
Matrix optimization
I realize that my system is underdetermined but I know what the matrix is. A large # of the entries are zero (almost 40%)and wa...

13 years ago | 0

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Matrix optimization
I know the sum of each row and sum of each column and that the Trace(A) = 0 (and a[i,j] = 0 if i=j) of a 9x9 matrix and I was wo...

13 years ago | 5 answers | 0

5

answers