(46) Day-light terminators and other sunlight parameters

In this example show how the module solar is used to plot several terminator lines that depend on the location of the sun with respect to Earth. We also show how an EPS illustration can serve as a custom symbol to be plotted with plot.

using GMT

coast(limits=:global, frame=(annot=:a,ticks=:a,grid=:a), proj=:EckertVI,
      area=5000, shore=0.5, borders=(type=1, pen=(0.5,:gray)), water=[175 210 255])
solar!(terminators=(term=:d, date="2016-02-09T16:00:00"), fill="navy@95")
solar!(terminators=(term=:c, date="2016-02-09T16:00:00"), fill="navy@85")
solar!(terminators=(term=:n, date="2016-02-09T16:00:00"), fill="navy@80")
solar!(terminators=(term=:a, date="2016-02-09T16:00:00"), fill="navy@80")

t = solar(sun=(date="2016-02-09T16:00:00",), format=true);
plot!(t, symbol="k@sunglasses/1.5", fill=:yellow, show=true)