Hello everyone, I already plotted map of an area in Africa, as shown below, and i want to plot 1) geographic information on top of the color pattern, 2) Place the legend much down the plot. how to I go about it. Below is the plot with the codes and the some data used
gmt begin dilatation4.png
gmt set MAP_FRAME_TYPE plain
gmt set FONT_LABEL 15p
gmt makecpt -Cjet -T-4.0/4.0
gmt coast -R0/47/-20/20 -JM20c -BWSne -Baf -I1/1p,0/200/251 -W1,black -Gwhite -Di -N2/0.25p,black -Na/0.5,black -Swhite
gmt surface dila.dat -Gsurface.GRD -T0.5 -I0.01 -R0/47/-20/20
gmt grdimage surface.GRD -Q -C
gmt coast -Ir/grey -Wlightgrey -Swhite -N1/darkgrey
gmt colorbar -Dx4c/5c+w4c/0.3c+jTC+h+e -Bxa2f0.5+l"Dilatation [per year]" -C
| #long | lat | dilat |
|---|---|---|
| 12.2 | -20 | -0.013 |
| 12.4 | -20 | -0.021 |
| 12.6 | -20 | -0.03 |
| 12.8 | -20 | -0.037 |
| 13 | -20 | -0.048 |
| 13.2 | -20 | -0.056 |
| 13.4 | -20 | -0.065 |
| 13.6 | -20 | -0.073 |
| 13.8 | -20 | -0.081 |
| 14 | -20 | -0.087 |
| 14.2 | -20 | -0.097 |
| 14.4 | -20 | -0.11 |
| 14.6 | -20 | -0.123 |
| 14.8 | -20 | -0.138 |
| 15 | -20 | -0.151 |
| 15.2 | -20 | -0.161 |
| 15.4 | -20 | -0.17 |
| 15.6 | -20 | -0.179 |
| 15.8 | -20 | -0.179 |
| 16 | -20 | -0.178 |
| 16.2 | -20 | -0.175 |
| 16.4 | -20 | -0.168 |
| 16.6 | -20 | -0.164 |
| 16.8 | -20 | -0.144 |
| 17 | -20 | -0.127 |
| 17.2 | -20 | -0.111 |
| 17.4 | -20 | -0.086 |
| 17.6 | -20 | -0.067 |
| 17.8 | -20 | -0.043 |
| 18 | -20 | -0.013 |
| 18.2 | -20 | 0.02 |
| 18.4 | -20 | 0.058 |
| 18.6 | -20 | 0.098 |
| 18.8 | -20 | 0.137 |
| 19 | -20 | 0.183 |
| 19.2 | -20 | 0.233 |
| 19.4 | -20 | 0.265 |
| 22.0 | 20 | -0.102 |
| — | — | — |
| 22.2 | 20 | -0.1 |
| 22.4 | 20 | -0.099 |
| 22.6 | 20 | -0.098 |
| 22.8 | 20 | -0.098 |
| 23.0 | 20 | -0.098 |
| 23.2 | 20 | -0.101 |
| 23.4 | 20 | -0.101 |
| 23.6 | 20 | -0.102 |
| 23.8 | 20 | -0.103 |
| 24.0 | 20 | -0.104 |
| 24.2 | 20 | -0.106 |
| 24.4 | 20 | -0.108 |
| 24.6 | 20 | -0.11 |
| 24.8 | 20 | -0.111 |
| 25.0 | 20 | -0.11 |
| 25.2 | 20 | -0.11 |
| 25.4 | 20 | -0.107 |
| 25.6 | 20 | -0.107 |
| 25.8 | 20 | -0.108 |
| 26.0 | 20 | -0.111 |
| 26.2 | 20 | -0.115 |
| 26.4 | 20 | -0.119 |
| 26.6 | 20 | -0.123 |
| 26.8 | 20 | -0.128 |
| 27.0 | 20 | -0.132 |
| 27.2 | 20 | -0.136 |
| 27.4 | 20 | -0.14 |
| 27.6 | 20 | -0.144 |
| 27.8 | 20 | -0.149 |
| 28.0 | 20 | -0.154 |
| 28.2 | 20 | -0.16 |
| 28.4 | 20 | -0.166 |
| 28.6 | 20 | -0.172 |
| 28.8 | 20 | -0.178 |
| 29.0 | 20 | -0.184 |
| 29.2 | 20 | -0.192 |
| 29.4 | 20 | -0.2 |
| 29.6 | 20 | -0.207 |
| 29.8 | 20 | -0.216 |
