Hi Community users,
is there a way to affect a color to a map rose or map compass ?
warm regards
Stéfan
GMT_france.pdf (128.8 KB)
Hello @Stefan,
welcome to the GMT forum 
!
Do you mean filling the circle of the map rose or compass with a specific color? As far as I know there is no modifier for this, but playing with -F to add a box can be helpful here. By default, a rectangular box is drawn:
gmt begin rose_box png
gmt basemap -JX5c -R-5/5/-5/5 -B+gtan -TdjMC+w2c+f1+lW,O,S,N -F
gmt end show
Using some of the available modifiers:
- +g fill color
- +p outline with thickness,color,style
- +c clearance / gap
- +r rounded eges with radius in points → use a huge value to get a circle
gmt begin rose_box_circle png
gmt basemap -JX5c -R-5/5/-5/5 -B+gtan -TdjMC+w2c+f1+lW,O,S,N -F+gwhite+p0.1p,gray30,solid+c0.7c+r48p
gmt end show
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Hi @Stefan,
You can also play with the default GMT settings. For example, in the case of the rose exposed by @yvonnefroehlich you can set different colors to each part of the rose:
gmt begin rose_box_circle png
gmt basemap -JX5c -R-5/5/-5/5 -B+gtan -TdjMC+w2c+f1+lW,O,S,N -F+gwhite+p0.1p,gray30,solid+c1c+r57p --FONT_TITLE=8p,AvantGarde-Book,Red --MAP_DEFAULT_PEN=default,Pink --MAP_TICK_PEN_PRIMARY=thin,Green
gmt end show
It is not very intuitive but you can manage to get something pretty (not like mine).
Jose
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