next up previous contents index
Next: O.3.2 Fixed number of Up: O.3 Examples of Contour Previous: O.3 Examples of Contour   Contents   Index

O.3.1 Equidistant labels

Our first example uses the default placement algorithm. Because of the size of the map we request contour labels every 1.5 inches along the lines:





pscoast -R50/160/-15/15 -JM5.5i -Glightgray -A500 -K -P > GMT_App_O_1.ps
grdcontour geoid.grd -J -O -B20f10WSne -C10 -A20+s8 -Gd1.5i -S10 -T:LH >> GMT_App_O_1.ps





As seen in Figure O.1, the contours are placed rather arbitrary. The string of countours for $-40$ to $60$ align well but that is a fortuitous consequence of reaching the 1.5 inch distance from the start at the bottom of the map.

Figure O.1: Equidistant contour label placement with -Gd, the only algorithm available in previous GMT versions.
\begin{figure}\centering\epsfig{figure=eps/GMT_App_O_1.eps}\end{figure}


next up previous contents index
Next: O.3.2 Fixed number of Up: O.3 Examples of Contour Previous: O.3 Examples of Contour   Contents   Index
Paul Wessel 2004-10-01