LANDMAP plots the earth land edge map using a linear projection. The latitude and longitude are assumed to be a linear grid on a flat surface. It is a special case of LNDMAP (described below). By using the PLOT routine clipping option only parts of the map surface can be plotted if desired. Uses Fortran file unit 2. The transformation of a latitude/longitude pair (a,b) in degrees to an (x,y) pair for plotting is:
x = (b - s) * along / 360
y = (a + 90) * alat / 180
CALL LANDMAP(alat,along,s) alat (R): latitude scale factor (plot units/180 deg) along (R): longitude scale factor (plot units/360 deg) s (R): longitude of left-mode edge of map (-180 to +180)