6.2.2.3 General Stereographic Map

Next: 6.2.3 Orthographic Projection (-Jg Up: 6.2.2 Stereographic Equal-Angle Projection Previous: 6.2.2.2 Rectangular Stereographic Map Contents Index

6.2.2.3 General Stereographic Map

In terms of usage this projection is identical to the Lambert azimuthal equal-area projection. Thus, one can make both rectangular and hemispheric maps. Our example shows Australia using a projection pole at 130E/30 $^{o}$ S. The command used was

gmtset PLOT_DEGREE_FORMAT ddd:mm:ss OBLIQUE_ANNOTATION 0
pscoast -R100/-40/160/-10r -JS130/-30/4i -B30g10/15g15 -Dl -A500 -Gblack -P \
    > GMT_stereographic_general.ps

**Figure 6.9:** General stereographic conformal projection with rectangular borders.
$\begin{figure}\centering\epsfig{figure=eps/GMT_stereographic_general.eps}\end{figure}$

By choosing 0 $^{o}$ /0 $^{o}$ as the pole, we obtain the conformal stereonet presented next to its equal-area cousin in the Section 6.2.1 on the Lambert azimuthal equal-area projection (Figure 6.6).

Next: 6.2.3 Orthographic Projection (-Jg Up: 6.2.2 Stereographic Equal-Angle Projection Previous: 6.2.2.2 Rectangular Stereographic Map Contents Index

Paul Wessel 2004-10-01