Problem 2029. Convert vector datasets to plot with imagesc instead of scatter

Created by Ted in Community

For large datasets this allows much faster plotting.

An irregular 2D spatial sampling is provided in x and y vectors with a data point to plot in vector d. A bin size is also provded in vector b=[dx,dy]

Return a 2D matrix M with minimal empty cells with the correct spatial relationship of d and last value only retained in the event of duplicates.


 b = [6,9];
 x = rand(3333,1)*100*b(1)+1500;
 y = rand(3333,1)*100*b(2)+50000;
 d = sind(sqrt(x.^2+y.^2))./sqrt(x.^2+y.^2);

Return G, a 2D matrix with d binned in rows and columns

Solution Stats

16.67% Correct | 83.33% Incorrect
Last solution submitted on Dec 03, 2013

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