<div dir="ltr">Hi there<div><br></div><div>I'm doing a comparative analysis of Global DEMs, and I using the results from r.stats, combined with python/matplotlib to make some histograms. According to r.stats manual, the area results are reported as square meters, but my values seem a bit off. Attached is a histogram of ETOPO1, with 50m bins. The mode of the oceanic area goes to 6.000.000 m2, and the coastal plains reach 1.3 E7 m2.</div>
<div><br></div><div>But looking to the histogram made by Eakins and Sharman (<a href="http://www.ngdc.noaa.gov/mgg/global/etopo1_surface_histogram.html">http://www.ngdc.noaa.gov/mgg/global/etopo1_surface_histogram.html</a>), the values don't quite match. Their histogram show a mode with about 350 km2 for the oceans and one with 750 km2 at the coastal areas.</div>
<div><br></div><div>any hints on this? From what I could find, r.stats does account for cell area variation.</div><div><br></div><div>best</div><div><br></div><div>Carlos</div><div><br></div><div><br></div><div><br></div>
<div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div> <img src="cid:ii_1469b9745b493946" alt="Inline image 1" width="454" height="319.01486620416256"><br clear="all">
<div><br></div>-- <br><div dir="ltr">Prof. Carlos Henrique Grohmann<br>Institute of Energy and Environment - Univ. of São Paulo, Brazil<div>- Digital Terrain Analysis | GIS | Remote Sensing - </div><div><br></div><div><a href="http://carlosgrohmann.com/" target="_blank">http://carlosgrohmann.com</a></div>
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________________<br>Can’t stop the signal.</div></div></div>
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