Attached is a Figure with 40-50 data points showing the value of D at specific values of x and y. MarkerSize and MarkerFaceColor are controlled by two LUT's so that small values of D give small spots colored blue and large values of D have large spots colored red. Until recently, the code behaved as expected, each marker having one color. Now the markers have weird radial streaks ("crinkles"). Any suggestions on where the crinkles in MarkerFaceColor might be coming from? The colormap is 'jet', but changing the colormap did not solve the problem. Thank you for your help.