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## Linear projection

We start by making the basemap frame for a linear x-y plot. We want it to go from 10 to 70 in x, annotating every 10, and from -3 to 8 in y, annotating every 1. The final plot should be 4 by 3 inches in size. Here's how we do it:

    psbasemap –-R10/70/-3/8 –-JX4i/3i -–B10/1:."My first plot": –-P >! plot.ps

You can view the result with ghostview plot.ps.

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