<div dir="ltr"><div><div>Filip,<br><br></div>Yes; look at the GRASS raster commands: r.terraflow, r.watershed<br><br></div>Tom<br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Nov 19, 2015 at 5:02 PM, wcd <span dir="ltr"><<a href="mailto:vydramail@quick.cz" target="_blank">vydramail@quick.cz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span style="font-size:12.8px">Hello all,</span><div style="font-size:12.8px">Does GRASS have a tool equivalent to what ArcGIS callsĀ <a href="http://resources.arcgis.com/EN/HELP/MAIN/10.2/index.html#/Flow_Accumulation/009z00000051000000/" target="_blank">Flow Accumulation</a>? Input is a flow direction raster and output is a cumulative catchment area raster. As an optional argument you can specify a weight raster, which is really important for what I am trying to do - count cells of woodland upstream from each cell in the flow direction grid.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">All GRASS tools I thought could do this require DTM as input, not flow direction raster, and they also don't allow to specify the weight raster. As far as I can see.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Do you know about any other OSGeo tools that could do this? Ideally Python friendly?</div><div style="font-size:12.8px">Best regards,</div><div style="font-size:12.8px">Filip Kral.</div></div>
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