Hi All,
I have a list of objects and a measure of similarity between each of them
such that I can define a matrix that holds the similarity between objects
$i and $j as
$similarity->[$i]->[$j] = sim($i, $j);
I'd like to display that matrix as a heatmap but with the list of objects
sorted so that when I plot it, objects that are similar are next to each
other. I'm getting a lot of heatmap results from TFW and some on CPAN, but
they all seem to be concerned with overlays on maps rather than the
ordering of the columns. I can display the result with gnuplot, but I'm
getting bogged down in the sorting.
I'm in the middle of some kind of selection sort based on minimizing the
sum of the differences between the rows, but I thought I should ask if
anyone has any experience with pretty-ing up heatmaps or if the problem has
already been solved.
thanks,
--
Boyd Duffee
Brexit has made Europe the new rock and roll,
that thing the older generation just doesn't understand.
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