> How to change (or remove) the color of part of the grid of a figure by
> covering a stretch of the lines of the grid with white lines?
Maybe place a white rectangle in front of it?
set object 1 rectangle front from X1,Y1 to X2,Y2
set object 1 fillcolor rgb "white" fillstyle solid 1.0 noborder
That is it. But I am still wondering if it is possible to cover part
of the line by white line.
Thank you. Happy New Year
Same thing with an arrow
set arrow 1 front from X1,Y1 to X2,Y2 nohead
set arrow 1 linecolor rgb "white" linewidth 2