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Robinson Projection (-–Jn -JN)

     

The Robinson projection, presented by Arthur H. Robinson in 1963, is a modified cylindrical projection that is neither conformal nor equal-area. Central meridian and all parallels are straight lines; other meridians are curved. It uses lookup tables rather than analytic expressions to make the world map ``look'' right5.2†. The scale is true along latitudes $\pm$ 38o. The projection was originally developed for use by Rand McNally and is currently used by the National Geographic Society. To use it you must enter

$\bullet$
The central meridian

$\bullet$
Scale along equator in inch/degree or 1:xxxxx (-Jn), or map width (-–JN)

Again centered on Greenwich, the example below was created by this command:





pscoast -R-180/180/-90/90 -JN0/4.5i -Bg30/g15 -Dc -A10000 -G128 -P >! GMT_robinson.ps






  
Figure 5.29: World map using the Robinson projection
\begin{figure}\centering\epsfig{figure=eps/GMT_robinson.eps}\end{figure}

     



Paul Wessel
1999-07-01