Representation of matrices/vectors as heatmap

[volkerbecker]

It would be very helpful if you have for example a std::vector of length 10000, you could specify that this is to be interpreted as a 100x100 matrix and you could then display the entries as a heatmap.

[awulkiew]

Right now the extension supports Boost.GIL images. I guess this could be implemented as a user-defined grayscale image with mapped colors.