Open asinghvi17 opened 4 years ago
you are rendering gigapixel images??
This still seems to be a problem in CairoMakie, I've been sitting on a 30,000x30,000 heatmap to render for more than 5 minutes. I'm not sure what we can do to fix it, though...
The image is a distance matrix between two trajectories (basically euclidean.((-).(x, y'))
). Theoretically, I could just downsample and render, but that might miss some dynamics or outlier points which I don't want to miss. I suppose the other possibility is image resizing through Gaussians, but that's a bit of a headache as an external solution.
GLMakie works pretty well, though, which is nice.
10k by 10k works fine for me, but 30k by 30k sucks up all my memory (~25GB available). I don't know if this is Cairos fault or ours...
It seems like Cairo really struggles with rendering 30,000 by 30,000 or higher resolution images / heatmaps. This comes up in the context of large colormaps which need interpolation.
One option is to tile the heatmaps into quadrants, such that the texture's size is reduced.