gmt begin 2D-axes-examples png,pdf
gmt set FONT_TITLE 15p
gmt subplot begin 1x7 -Fs4c/4c -M5p/10p
    gmt basemap -R0/4/0/4 -BWS+t'-BWS' -c
    gmt basemap -R0/4/0/4 -BWSEN+t'-BWSEN' -c
    gmt basemap -R0/4/0/4 -BWSen+t'-BWSen' -c
    gmt basemap -R0/4/0/4 -BWSrt+t'-BWSrt' -c
gmt subplot end
gmt end