<html><head><style type="text/css">body {word-wrap: break-word; background-color:#ffffff;}</style></head><body><div style="font-family: sans-serif; font-size: 16px"><br><br>--<br>Micha Silver<br><a href="tel:0523665918">052-366-5918</a><br><br>-----Original message-----<br>From: Rich Shepard <<a href="mailto:rshepard@appl-ecosys.com">rshepard@appl-ecosys.com</a>><br>To: <a href="mailto:grass-users@lists.osgeo.org">grass-users@lists.osgeo.org</a><br>Sent: Fri, 06 Apr 2012, 20:16:48 GMT+02:00<br>Subject: Re: [GRASS-user] r.stream.extract Syntax Problem<br><br>On Fri, 6 Apr 2012, Margherita Di Leo wrote:<br><br>> I meant something like:<br>> r.watershed ele=elevation.10m@PERMANENT acc=elevation.10m.weight_acc<br>> flow=weight -f<br><br><br><br>followed by:<br><br>GRASS 6.5.svn :~/grassdata > r.stream.extract<br>elev=dem10m.avg accum=dem10m.acc.weighted thresh=1000 stream_rast=dem10m.lm.streams<br>Load input maps and get start points...<br>ERROR: Accumulation map does not match elevation map!<br>[Raster MASK present]<br><br>Maybe the MASK is somehow interfereing ??<br><br><br><br>Still the same error generated. I'm quite puzzled</div></body></html>