Hi Tanya,<div><br></div><div>Try this in the command line: </div><div><br></div><div>r.mapcalc "newmap = 741.0 * 0.01"</div><div><br></div><div>or in the GUI use the map calculator and put in your desired equation as above.</div>
<div><br></div><div>The output of this command will be a new map with a value of 7.41. You can read about the mapcalc command here: <a href="http://grass.fbk.eu/gdp/html_grass64/r.mapcalc.html">http://grass.fbk.eu/gdp/html_grass64/r.mapcalc.html</a></div>
<div><br></div><div>Hope that helps!</div><div>Nick</div><div><br><br><div class="gmail_quote">On Sat, May 5, 2012 at 10:08 AM, Tanya Dyck <span dir="ltr"><<a href="mailto:tanya.dyck@hotmail.com" target="_blank">tanya.dyck@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">
I have a very basic question that I hope can be answered. I want to multiply the sum of my raster count (741) by a value (0.01) and have an output raster with that value. I've used r.sum to determine the sum of the data value but am unsure how I can take that value to multiply by a user defined value. Any help would be much appreciated.<div>
<br></div><div>Best,</div><div><br></div><div>Tanya</div> </div></div>
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