[GRASS-dev] [bug #5060] (grass) v.out.ascii: Improved documentation

Mon Aug 28 11:11:50 EDT 2006

this bug's URL: http://intevation.de/rt/webrt?serial_num=5060
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Attached is some improved documentation for v.out.ascii. I've included
information on what the Grass 'standard' format is, largel based on the
description given in v.in.ascii. I've also included an example showing what
the 'standard' output looks like on the 'quads' vector in Spearfish.

Let me know if in the future you prefer the documentation improvements to be
attached as a diff file, or pasted within the email text itself.

Regards,

~ Eric.


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--- v.out.ascii.html	2006-08-28 11:55:18.000000000 -0300=0A=
+++ v.out.ascii_improved.html	2006-08-28 11:54:56.000000000 -0300=0A=
@@ -61,6 +61,20 @@=0A=
 vector files between GRASS and other software, and for transferring =
data =0A=
 between machines.=0A=
 =0A=
+<p>=0A=
+If the <b>format</b> parameter is set to <b>standard</b>, a GRASS =
ASCII vector file will be exported, which may contain a mix of =
primitives including points, lines, boundaries, centroids, areas, =
faces, and kernels. A header will be written to the output ascii file =
containing vector metadata, if such metadata exists.=0A=
+<p>=0A=
+The primitive codes are as follows:=0A=
+<UL>=0A=
+<LI>'P': point</LI>=0A=
+<LI>'L': line</LI>=0A=
+<LI>'B': boundary</LI>=0A=
+<LI>'C': centroid</LI>=0A=
+<LI>'F': face (3D boundary)</LI>=0A=
+<LI>'K': kernel (3D centroid)</LI>=0A=
+<LI>'A': area (boundary) - better use 'B'; kept only for backward =
compatibility</LI>=0A=
+</UL>=0A=
+The coordinates are listed following the initial line containing the =
primitive code, the total number of vectors in the series, and the =
number of categories (1 for a single layer, higher for multiple =
layers). Below that 1 or several lines follow to indicate the layer =
number and the category number (ID).=0A=
 <p> =0A=
 The order of coordinates for new (standard) version of ASCII file is =
<BR><BR>=0A=
 X Y [Z]=0A=
@@ -90,6 +104,47 @@=0A=
 <em>v.to.points</em> and then exporting with <em>v.out.ascii</em> in =
=0A=
 <em>points</em> mode.=0A=
 =0A=
+<h2>EXAMPLE</h2>=0A=
+=0A=
+<h3>Example 1) - export to standard mode</h3>=0A=
+Sample ASCII polygon vector map output for 'standard' mode. =0A=
+The example can be tested in the Spearfish sample dataset:=0A=
+<p>=0A=
+<div class=3D"code"><pre>=0A=
+v.out.ascii input=3Dquads format=3Dstandard=0A=
+</pre></div>=0A=
+<p>=0A=
+<div class=3D"code"><pre>=0A=
+ORGANIZATION: US Army Const. Eng. Rsch. Lab=0A=
+DIGIT DATE:   May 1987=0A=
+DIGIT NAME:   grass=0A=
+MAP NAME:     Quads=0A=
+MAP DATE:     May 1987=0A=
+MAP SCALE:    24000=0A=
+OTHER INFO:=0A=
+ZONE:         13=0A=
+MAP THRESH:   18.288000=0A=
+VERTI:=0A=
+B  4=0A=
+ 599587.1820962 4914067.53414294=0A=
+ 589639.15126831 4913922.5687301=0A=
+ 589440.96838162 4927803.62500018=0A=
+ 599375.87959179 4927959.83330436=0A=
+B  2=0A=
+ 599375.87959179 4927959.83330436=0A=
+ 599587.1820962 4914067.53414294=0A=
+B  4=0A=
+ 599587.1820962 4914067.53414294=0A=
+ 609541.5508239 4914236.0597482=0A=
+ 609316.10665227 4928116.8490555=0A=
+ 599375.87959179 4927959.83330436=0A=
+C  1 1=0A=
+ 594125.63    4921115.58=0A=
+ 1     1=0A=
+C  1 1=0A=
+ 604433.84    4921087.1=0A=
+ 1     2=0A=
+</pre></div>=0A=
 =0A=
 <h2>SEE ALSO</h2>=0A=
 =0A=

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From: "Patton, Eric" <epatton at nrcan.gc.ca>
To: "'grass-bugs at intevation.de '" <grass-bugs at intevation.de>
Cc: "'tutey at o2.pl '" <tutey at o2.pl>
Subject: v.out.ascii: Improved documentation
Date: Mon, 28 Aug 2006 12:11:42 -0300
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