double[,] data = SampleData.MonaLisa();

var hm1 = myPlot.Add.Heatmap(data);
hm1.Extent = new(0, 1, 0, 1);
hm1.Colormap = new ScottPlot.Colormaps.Turbo();
myPlot.Add.ColorBar(hm1);

var hm2 = myPlot.Add.Heatmap(data);
hm2.Extent = new(1.5, 2.5, 0, 1);
hm2.Colormap = new ScottPlot.Colormaps.Viridis();
myPlot.Add.ColorBar(hm2);