drawlater is ignored with scatter

Reported by Oscar van der Velde

BUG DESCRIPTION:
----------------

My program plots points in 4 subplots (t-z, x-y, x-z, y-z).
A simplified piece of code is:


            drawlater();
            set(gcf(),"color_map",fastcmap);

            sca(ax(1));
            scatter(t,z,p,fastcolorparam,'diamond');
            sca(ax(2));
            scatter(x,y,p,fastcolorparam,'diamond');
            sca(ax(3));
            scatter(x,z,p,fastcolorparam,'diamond');
            sca(ax(4));
            scatter(y,z,p,fastcolorparam,'diamond');

            drawnow();

Or with variations of the position of drawlater (e.g. after each sca line)
What happens is the plot blinks 4 times, each time the previous ones are removed and replotted. It does not wait to draw all until drawnow().

The blinking gets slower with thousands of data points. My intention was to not replot the previous subplots, avoiding the blinking every time I go to the next 10-minute file to be plotted.

drawlater is ignored with scatter

Reported by Oscar van der Velde

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