I use
gmt plot -Sc0.2 -Gauto table
and my table is as simple as could be:
3 5
1.25 3
1.6 10
10 25
…
I’d expect the symbol color to cycle through the colors in COLOR_SET, but they’re all black. What’s wrong here?
But -Gauto is not a valid GMT syntax!
Wait a second, the documentation for the plot command puts it this way:
-G fill|+z
Finally, if fill = auto[-segment] or auto-table then we will cycle through the fill colors implied by COLOR_SET and change on a per-segment or per-table basis. Any transparency setting is unchanged.
auto works for lines and polygons
I couldn’t make it work for symbols.
OK, that’s what happens when you don’t read the docs. But I remember that the color rotation was meant only for lines.