<div>
Hi all.
</div><div><br></div><div>The other day something popped on my mind, which I think could end in some research paper, but</div><div>before I venture into it I decided to ask you guys about it. I did some googling and got nothing.</div><div><br></div><div>So, considering a large area DEM: if I want its derivatives (slope, aspect, etc) in large-scale (larger than</div><div>the original DEM), which one is best, to resample the DEM and then calculate the derivatives, or to calculate</div><div>the derivatives and resample them? Much difference expected? The same?</div><div><br></div><div>best</div><div><br></div><div>Carlos</div>
<div><div><br></div><div>-- </div><div><span style="color: rgb(0, 0, 0); font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: small; display: inline !important; float: none; ">Prof. Carlos Henrique Grohmann</span><br style="color: rgb(0, 0, 0); font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: small; "><span style="color: rgb(0, 0, 0); font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: small; display: inline !important; float: none; ">Institute of Geosciences - Univ. of São Paulo, Brazil</span><div style="color: rgb(0, 0, 0); font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: small; ">- Digital Terrain Analysis | GIS | Remote Sensing - </div><div style="color: rgb(0, 0, 0); font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: small; "><br><a href="http://carlosgrohmann.com/" target="_blank">http://carlosgrohmann.com</a><div>________________<br>Can’t stop the signal.</div></div></div><div>Sent with <a href="http://www.sparrowmailapp.com/?sig">Sparrow</a></div><div><br></div></div>