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Eckert VI Projection (-–Jk -JK)

     

The Eckert VI projection, presented by Max Eckert in 1906, is a pseudocylindrical equal-area projection. Central meridian and all parallels are straight lines; other meridians are equally spaced sinusoids. The scale is true along latitudes $\pm$ 49o16'’. Its main use is in thematic world maps. To use it you must enter

$\bullet$
The central meridian

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

Centered on the Dateline, the example below was created by this command:





pscoast -R0/360/-90/90 -JK180/4.5i -Bg30/g15 -Dc -A10000 -W0.25p -G255 -S200 -P >! GMT_eckert.ps






  
Figure 5.28: World map using the Eckert VI projection
\begin{figure}\centering\epsfig{figure=eps/GMT_eckert.eps}\end{figure}

     



Paul Wessel
1999-03-25