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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I would like to calculate the slope length and steepness (LS) factor for USLE using r.watershed with the parameter length.slope. I have two questions:<o:p></o:p></p>
<p class="MsoNormal">1) Is it necessary to reproject my raster into a projected coordinate system or can I leave it in latitude-longitude?<o:p></o:p></p>
<p class="MsoNormal">2) It is required to set a value for the threshold. Is it not possible to get a value for each cell? If not, do I always have to delineate the watersheds as well and the length.slope returned is the value at the outlet?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance for any help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB">Laura</span><o:p></o:p></p>
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