I am trying to plot my shear-wave splitting parameters on GMT by using psxy, but I misunderstood something .
if legend is
45.50 54.50 30 1.0
I expected to have a line with an azimuth of 30 degrees from the vertical, but it seems I have more a line with an azimuth of 60 degrees from the vertical. I am not sure what is wrong with my pixy
gmt psxy legend -R$R -Sv0.2i+jc -W2.5p,red -X-0.05 -Y0.1