MATLAB: How to use scatter with transparent dots

facealphascattertransparent

facealpha is not working for me

Best Answer

MarkerFaceAlpha and MarkerEdgeAlpha are what you're looking for. Check out this example.
https://www.mathworks.com/examples/matlab/mw/graphics-ex36949892-create-scatter-chart-with-transparency
[from the link]
x = [5 10 11 13 18];
y1 = [40 80 150 80 50];
a1 = 100*[100 50 80 30 50];
scatter(x,y1,a1,'MarkerFaceColor','b','MarkerEdgeColor','b',...
    'MarkerFaceAlpha',.2,'MarkerEdgeAlpha',.2)
axis([0 20 0 200])
x = [2 6 8 11 13];
y2 = [30 40 100 60 140];
a2 = 100*[30 50 30 80 80];
hold on
scatter(x,y2,a2,'MarkerFaceColor','r','MarkerEdgeColor','r',...
    'MarkerFaceAlpha',.2,'MarkerEdgeAlpha',.2)
hold off
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