<div dir="ltr">Dear Andrea,<br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Nov 20, 2014 at 5:00 AM, Andrea Timmermann <span dir="ltr"><<a href="mailto:timmermann@gmx.at" target="_blank">timmermann@gmx.at</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div style="font-family:Verdana;font-size:12px"><div>Hi Helmut and Margherita,</div>

<div> </div>

<div>Thanks for your mails! Here are the answers to your questions:</div>

<div> </div>

<div><b>a) </b><span style="line-height:1.6em"><b>This is the result of <a href="http://r.info" target="_blank">r.info</a> and g.region:   </b>                    </span></div>

<div> </div>

<div><a href="http://r.info" target="_blank">r.info</a> map@Elevation                                                           </div>

<div> +----------------------------------------------------------------------------+</div>

<div> | Map:      map@Elevation                  Date: Sat Nov 15 16:35:08 2014    |</div>

<div> | Mapset:   Elevation                      Login of Creator: Andrea        |</div>

<div> | Location: ElevationData                                                    |</div>

<div> | DataBase: C:\Users\Andrea\Documents\grassdata                            |</div>

<div> | Title:     ( map )                                                         |</div>

<div> | Timestamp: none                                                            |</div>

<div> |----------------------------------------------------------------------------|</div>

<div> |                                                                            |</div>

<div> |   Type of Map:  raster               Number of Categories: 0               |</div>

<div> |   Data Type:    FCELL                                                      |</div>

<div> |   Rows:         21612                                                      |</div>

<div> |   Columns:      10812                                                      |</div>

<div> |   Total Cells:  233668944                                                  |</div>

<div> |        Projection: Latitude-Longitude                                      |</div>

<div> |            N:  45:00:02N    S:  42:59:58N   Res: 0:00:00.333333            |</div>

<div> |            E:  70:59:58W    W:  72:00:02W   Res: 0:00:00.333333            |</div>

<div> |   Range of data:    min = 18.40538  max = 1916.398                         |</div>

<div> |                                                                            |</div>

<div> |   Data Description:                                                        |</div>

<div> |    generated by r.patch                                                    |</div>

<div> |                                                                            |</div>

<div> |   Comments:                                                                |</div>

<div> |    r.patch input="n44-72@Elevation,n45_72@Elevation" output="map"          |</div>

<div> |                                                                            |</div>

<div> +----------------------------------------------------------------------------+</div>

<div> </div>

<div>g.region -p                                                                    </div><span class="">

<div>projection: 3 (Latitude-Longitude)</div>

<div>zone:       0</div>

<div>datum:      nad83</div>

<div>ellipsoid:  grs80</div>

</span><div>north:      45:00:02N</div>

<div>south:      42:59:58N</div>

<div>west:       72:00:02W</div>

<div>east:       70:59:58W</div>

<div>nsres:      0:00:01</div>

<div>ewres:      0:00:01</div>

<div>rows:       7204</div>

<div>cols:       3604</div>

<div>cells:      25963216</div></div></div></blockquote><div><br></div><div style="font-family:Verdana;font-size:12px">Here I see 2 possible problems. One is the one referred by Helmut, that r.basin only is able to work on projected locations. The other is that the region should match with the dem, thus, before running r.basin, please set g.region rast=map@Elevation . The same applies also to your example in the NC dataset.<br><br><div>Let us know how it goes.<br><br></div><div>cheers,<br></div><div>madi<br></div></div></div><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><font color="#666666">Best regards,</font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Dr. Margherita DI LEO    </font></div><div><span style="color:rgb(102,102,102);font-family:arial;font-size:small">Scientific / technical project officer</span><br></div><div><font color="#666666"><br></font></div><div><font color="#666666">European Commission - DG JRC </font></div><div><font color="#666666">Institute for Environment and Sustainability (IES)</font></div><div><font color="#666666">Via Fermi, 2749</font></div><div><font color="#666666">I-21027 Ispra (VA) - Italy - TP 261</font></div><div><font color="#666666">       </font></div><div><font color="#666666">Tel. +39 0332 78 3600   </font></div><div><font color="#666666"><a href="mailto:margherita.di-leo@jrc.ec.europa.eu" target="_blank">margherita.di-leo@jrc.ec.europa.eu</a></font></div><div><font color="#666666"><br></font></div><div><font color="#666666">Disclaimer: The views expressed are purely those of the writer and may not in any circumstance be regarded as stating an official position of the European Commission.</font></div></div></div>
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