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<p style="margin-bottom: 0cm; margin-top: 0pt; direction: ltr;">On
15/06/2011 10:46, <a class="moz-txt-link-abbreviated" href="mailto:sgw00412@nifty.com">sgw00412@nifty.com</a> wrote:<br>
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<blockquote style="direction: ltr;"
cite="mid:18641203.287171308123988579.sgw00412@nifty.com"
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<pre style="direction: ltr;" wrap="">Dear grass users
I'm from Japan and begginer user of grass GIS.
I tried to draw earthquake map of tohoku Japan.
First, I summarized of some earthquake data, for example lat, lon, depth and m
agnitude.
---------------------------------
lon lat depth Magnitude
---------------------------------
139.9, 37.7, 10, 3.1
141.0, 35.8, 10, 2.6
142.7, 40.8, 20, 4.4
...
---------------------------------
Second, this text data was imported to grass data by using v.in.ascii, as foll
ows;
cat data.txt | v.in.ascii fs=',' cat=0 x=1 y=2 out=quake columns='x double pre
cision, y double precision, depth integer, mag double precision'
So, I typed to 'v.vect quake'
These points where the earthquake were displayed by cross (x) .
Next, I tried to display new map as circle size of earthquake-magnitude.
</pre>
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<br>
You probably want here:<br>
d.vect.thematic map=quake col=mag type=point
themetype=graduated_points icon=basic/circle<br>
<br>
There are more options for coloring, etc.<br>
<br>
<br>
<blockquote style="direction: ltr;"
cite="mid:18641203.287171308123988579.sgw00412@nifty.com"
type="cite">
<pre style="direction: ltr;" wrap="">
v.vect quake size=magnitude
However, unsuccessful....What should I do?
Yasuo shimada ( Japan weathere association )
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