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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi everyone,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve been using GRASS for a couple months now on a Windows platform. I use it for hydrological modelling. I started with WinGrass 6.4.3RC2 and then decided to try out WinGrass7 (<span lang=EN-US style='font-size:10.5pt;color:#333333'>SVN nightly winGRASS 7 experimental build downloaded on February 23 2013)</span><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>r.watershed worked well in WinGrass 6.4.3RC2, but it seems to have the following bugs in WinGrass 7. Any information on these bugs would be appreciated:<o:p></o:p></p><p class=MsoNormal>1) output flow accumulation map is actually a drainage direction map<o:p></o:p></p><p class=MsoNormal>2) no output of flow accumulation map<o:p></o:p></p><p class=MsoNormal>(streams and basins output maps are fine)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The command I used is:<o:p></o:p></p><p class=MsoNormal>r.watershed -m elevation=DEMmap threshold=4000 accumulation=ACCmap drainage=DRAINDIRmap basin=BASINmap stream=STREAMmap<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>And the output was:<o:p></o:p></p><p class=MsoNormal>SECTION 1 beginning: Initiating Variables. 5 sections total.<o:p></o:p></p><p class=MsoNormal>SECTION 1a: Mark masked and NULL cells<o:p></o:p></p><p class=MsoNormal>SECTION 1b: Determining Offmap Flow.<o:p></o:p></p><p class=MsoNormal>SECTION 2: A* Search.<o:p></o:p></p><p class=MsoNormal>SECTION 3a: Accumulating Surface Flow with MFD.<o:p></o:p></p><p class=MsoNormal>SECTION 3b: Adjusting drainage directions.<o:p></o:p></p><p class=MsoNormal>SECTION 4: Watershed determination.<o:p></o:p></p><p class=MsoNormal>SECTION 5: Closing Maps.<o:p></o:p></p><p class=MsoNormal>Closing stream segments map<o:p></o:p></p><p class=MsoNormal>Closing basins map<o:p></o:p></p><p class=MsoNormal>Closing accumulation map<o:p></o:p></p><p class=MsoNormal>Closing flow direction map<o:p></o:p></p><p class=MsoNormal>WARNING: category information for [DRAINDIRmap] in [HNK2] missing or invalid<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Results: Basin and Stream maps are good. No drainage direction map was output. The output flow accumulation map turned out to be a drainage direction map. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cheers,<o:p></o:p></p><p class=MsoNormal>Hanan<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB'>Hanan Karam</span></b><b><span style='font-family:"Arial","sans-serif";mso-fareast-language:EN-GB'><br></span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#004489;mso-fareast-language:EN-GB'>Consultant <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB'>-------------------------------------</span><span style='font-family:"Arial","sans-serif";mso-fareast-language:EN-GB'> <br></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#004489;mso-fareast-language:EN-GB'>ESI: The UK’s leading independent scientific environmental consultancy specialising in water, land and sustainable development.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'>T: +44 (0) 1743 276100 <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'>E: <a href="mailto:hanankaram@esinternational.com">mailto:hanankaram@esinternational.com</a>| W: <a href="http://www.esinternational.com/">http://www.esinternational.com</a><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'>ESI Ltd,</span><span style='font-family:"Arial","sans-serif";mso-fareast-language:EN-GB'> </span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'>New Zealand House, 160 Abbey Foregate, Shrewsbury, SY2 6FD <o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray;mso-fareast-language:EN-GB'>SHREWSBURY | LONDON | READING | CARDIFF<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#999999;mso-fareast-language:EN-GB'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#999999;mso-fareast-language:EN-GB'>This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. 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