I want to visualize data on a global Earth, with views of the equatorial region (Mollweide, -JW), and separate views of the north/south poles (orthographic, -JG). To keep things compact, I’d like a layout like the following:
Row 1: Mollweide1 Mollweide2 Mollweide3
Row 2: Ortho1a Ortho1b Ortho2a Ortho2b Ortho3a Ortho3b
So in other words, I want to fit 2 orthographic maps in the same horizontal space as a single Mollweide map in the previous row. So essentially for the second row, I want to divide each panel into 2 equal panels (subplot of a subplot).
Here is an attempt I made to do this:
#!/usr/bin/env bash
EQMERIDIAN="180"
# subplot dimensions
SUBPLOT_WIDTH1="3i"
SUBPLOT_WIDTH2="1.5i"
SUBPLOT_HEIGHT="1.5i"
gmt set MAP_FRAME_TYPE plain
eq_proj="-JW${EQMERIDIAN}/${SUBPLOT_WIDTH1} -Rg"
np_proj="-JG0/90/${SUBPLOT_HEIGHT} -R-180/180/60/90"
sp_proj="-JG180/-90/${SUBPLOT_HEIGHT} -R/-180/180/-90/-60"
gmt begin figure png
gmt subplot begin 1x3 -Fs${SUBPLOT_WIDTH1}/${SUBPLOT_HEIGHT}
gmt subplot set 0,0
gmt basemap ${eq_proj} -B0
gmt subplot set 0,1
gmt basemap ${eq_proj} -B0
gmt subplot set 0,2
gmt basemap ${eq_proj} -B0
gmt subplot end
gmt subplot begin 1x6 -Fs${SUBPLOT_WIDTH2}/${SUBPLOT_HEIGHT}
gmt subplot set 0,0
gmt basemap ${np_proj} -B0
gmt subplot set 0,1
gmt basemap ${sp_proj} -B0
gmt subplot set 0,2
gmt basemap ${np_proj} -B0
gmt subplot set 0,3
gmt basemap ${sp_proj} -B0
gmt subplot set 0,4
gmt basemap ${np_proj} -B0
gmt subplot set 0,5
gmt basemap ${sp_proj} -B0
gmt subplot end
gmt end show
And here is the result:
Can anyone suggest how to fix the plot? Also, if anyone knows of a nicer way to visualize all areas of the Earth in some nice way, I’d be interested in an example 