<div>Hi guys,</div>
<div> </div>
<div>sorry for my delay. I am trying your suggestions.</div>
<div> </div>
<div>cheers</div>
<div> </div>
<div>milton<br><br></div>
<div class="gmail_quote">2009/11/14 Rich Shepard <span dir="ltr"><<a href="mailto:rshepard@appl-ecosys.com">rshepard@appl-ecosys.com</a>></span><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div class="im">On Sat, 14 Nov 2009, Milton Cezar Ribeiro wrote:<br><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">I have a DEM, a drainage and a Cover mapa, and I need to estimate - for<br>ANY pixel of my drainage - what is the amount of my cover classes that<br>
"contribute" (or are upstream) of that pixel.<br></blockquote><br></div>milton,<br><br> Not all my data are imported and defined to the critical area so I cannot<br>offer direct experience. However, Single Flow Direction (SFD, D8) moves flow<br>
into a single downslope cell and is used by r.watershed and r.terraflow.<br>D-infinity, or vector grid approach, is used by r.flow. Multiple Flow<br>Directions (MFD, what you probably want to use) partitions the flow into two<br>
or more downslope directions and is used by r.terraflow, r.topmodel, and<br>r.mapcalc flow implementation in the r.mapcalc tutorial. Also check out<br>r.hydro.CASC2D.<br><br>HTH,<br><br>Rich<br>_______________________________________________<br>
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