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<div class="moz-cite-prefix">On 04/03/2014 11:31 AM, rajatrn wrote:<br>
</div>
<blockquote cite="mid:1396513874064-5132797.post@n6.nabble.com"
type="cite">
<pre wrap="">Hi,
I have two layer lists, NDVIFILES and VIQALIST, both developed using g.mlist
command in GRASS.
Each file has 22 items in it. I would like to perform a simple raster
calculation of the following form,
Mask$NDVIFILES [i] = NDVIFILES[i] * VIQALIST[i]
I'm unable to create a loop which can sequentially produce the required
outputs.
I will be grateful if anyone can help me with creating a loop using
bash/shell script.
I know it is simpler to do it in R but will be great if can be implemented
on using grass terminal/shell.
Thank you in advance,
Sincerely,
Rajat
</pre>
</blockquote>
<br>
Maybe something along these lines (not tested):<br>
<br>
for i in `seq 1 22`; do \<br>
NDVI=`sed -n "${i}p" NDVIFILES` ;<br>
VIQA=`sed -n "${i}p" VIQALIST` ;<br>
NEW=Mask${NDVI} ;<br>
echo "Creating ${NEW};<br>
r.mapcalc " $NEW = $NDVI * $VIQA ";<br>
done<br>
<br>
<br>
<blockquote cite="mid:1396513874064-5132797.post@n6.nabble.com"
type="cite">
<pre wrap="">
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</pre>
</blockquote>
<br>
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