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@@ -34,7 +34,7 @@ Projections are defined by precise mathematical relations, so the method
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of projecting coordinates from a geographic reference frame
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(latitude-longitude) into a projected cartesian reference frame (eg metres)
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is governed by these equations. Inverse projections can also be achieved.
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-The public-domain Unix software package <i>PROJ</i> [1] has been designed to
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+The public-domain Unix software package <i>PROJ.4</i> [1] has been designed to
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perform these transformations, and the user's manual contains a detailed
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description of over 100 useful projections. This also includes a
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programmers library of the projection methods to support other software
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@@ -69,7 +69,9 @@ prior to import or after export, using software such as <i>PROJ.4</i>'s
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<i><a href="http://proj.maptools.org/">cs2cs</a></i> [1]. This is an easy
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method for converting an ASCII file containing a list of coordinate points,
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since there is no topology to be preserved and <i>cs2cs</i> can be used to
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-process simple lists using a one-line command.
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+process simple lists using a one-line command. The <em>m.proj</em> module
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+provides a handy front end to <tt>cs2cs</tt>.
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+
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<p>
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The format of files containing vector maps with <b>lines</b> and <b>arcs</b> is
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generally more complex, as parts of the data stored in the files will describe
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@@ -180,7 +182,7 @@ then use that to set the region bounds before performing the reprojection:
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<div class="code"><pre>
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# calculate where output map will be
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-GRASS> r.proj in=elevation location=ll_wgs84 mapset=user1 -p
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+GRASS> r.proj input=elevation location=ll_wgs84 mapset=user1 -p
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Source cols: 8162
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Source rows: 12277
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Local north: -4265502.30382993
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@@ -189,7 +191,7 @@ Local west: 14271663.19157564
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Local east: 14409956.2693866
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# same calculation, but in a form which can be cut and pasted into a g.region call
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-GRASS> r.proj in=elevation location=ll_wgs84 mapset=user1 -g
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+GRASS> r.proj input=elevation location=ll_wgs84 mapset=user1 -g
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n=-4265502.30382993 s=-4473453.15255565 w=14271663.19157564 e=14409956.2693866 rows=12277 cols=8162
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GRASS> g.region n=-4265502.30382993 s=-4473453.15255565 \
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@@ -225,7 +227,7 @@ cols: 8136
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cells: 99535824
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# finally, perform the reprojection
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-GRASS> r.proj in=elevation location=ll_wgs84 mapset=user1 memory=800
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+GRASS> r.proj input=elevation location=ll_wgs84 mapset=user1 memory=800
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</pre></div>
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@@ -284,6 +286,7 @@ Springer-Verlag, Berlin, 2nd edition.
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<a href="g.proj.html">g.proj</a>,
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<a href="g.setproj.html">g.setproj</a>,
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<a href="i.rectify.html">i.rectify</a>,
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+<a href="m.proj.html">m.proj</a>,
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<a href="r.support.html">r.support</a>,
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<a href="r.stats.html">r.stats</a>,
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<a href="v.proj.html">v.proj</a>,
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Hamish Bowman