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@@ -20,23 +20,27 @@ The module <em>r.external.out</em> can be used along with
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while writing out the results directly in GeoTIFF:
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<div class="code"><pre>
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-# register GeoTIFF file in GRASS database:
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-r.external terra_lst1km20030314.LST_Day.tif out=modis_celsius
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+# register GeoTIFF file to be used in current mapset:
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+r.external input=terra_lst1km20030314.LST_Day.tif output=modis_celsius
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# define output directory for files resulting from GRASS calculation:
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r.external.out directory=$HOME/gisoutput/ format="GTiff"
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# perform GRASS calculation (here: extract pixels > 20 deg C)
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-# write output directly as GeoTIFF:
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-r.mapcalc "warm.tif = if(modis_celsius > 20, modis_celsius, null() )"
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+# this stores the output map directly as GeoTIFF:
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+r.mapcalc "warm.tif = if(modis_celsius > 20.0, modis_celsius, null() )"
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# cease GDAL output connection and turn back to write GRASS raster files:
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r.external.out -r
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-# use the result elsewhere
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-qgis $HOME/gisoutput/warm.tif
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+# now use the resulting file elsewhere
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+gdalinfo $HOME/gisoutput/warm.tif
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</pre></div>
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+<h2>REFERENCES</h2>
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+
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+GDAL Pages: <a href="http://www.gdal.org">http://www.gdal.org/</a><br>
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+
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<h2>SEE ALSO</h2>
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<em>
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@@ -45,12 +49,9 @@ qgis $HOME/gisoutput/warm.tif
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<a href="r.external.html">r.external</a>
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</em>
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-<h2>REFERENCES</h2>
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-
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-GDAL Pages: <a href="http://www.gdal.org">http://www.gdal.org/</a><br>
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-
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<h2>AUTHOR</h2>
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Glynn Clements
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-<p><i>Last changed: $Date$</i>
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+<p>
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+<i>Last changed: $Date$</i>
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