<div>In fact I have create two folder nlocation and nmapset in the hiberarchy of (nlocation/nmapset),then I start the grass with the gui ,I got the error messgae that I am mot clear?....</div>
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<div>1) I want to know the relation of the grassrc file and the contere location or mapset ? Which should be created frist?</div>
<div>2) If I do my process in the gui ,then should I do the g.region process?</div>
<div>3) Some data which can be displayed in the grass gui can not exported perfectly,most of them contains only black blank after exproted.....</div>
<div>Thanks!</div>
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<div class="gmail_quote">2009/6/8 Mathieu De Maeyer <span dir="ltr"><<a href="mailto:mathieu.de.maeyer@ulb.ac.be">mathieu.de.maeyer@ulb.ac.be</a>></span><br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">Hello,<br><br>First, you need to create a location (according to the file you want to import). You can create your sector manually or using a georeferenced file or using a EPSG code.<br>
<br>Then, you can import this file in your newly created location (r.in.gdal if it is a .tiff).<br><br>Then, before any raster operation (all r.* modules), you have to define correctly the region (using g.region). The region has a extension and a resolution. You can define your region manually or using any file : in your case, you should use your .tiff (e.g. , g.region rast=my_tiff_file). See manual for more info.<br>
<br>After setting correctly the region, you can use any raster module (e.g. r.buffer).<br><br>good luck<br>m.</blockquote></div><br>