<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Sep 3, 2015 at 6:40 PM, Newcomb, Doug <span dir="ltr"><<a href="mailto:doug_newcomb@fws.gov" target="_blank">doug_newcomb@fws.gov</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"><span class="">On Thu, Sep 3, 2015 at 6:22 PM, Vaclav Petras <span dir="ltr"><<a href="mailto:wenzeslaus@gmail.com" target="_blank">wenzeslaus@gmail.com</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 dir="ltr"><span><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Sep 3, 2015 at 5:14 PM, Newcomb, Doug <span dir="ltr"><<a href="mailto:doug_newcomb@fws.gov" target="_blank">doug_newcomb@fws.gov</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>r.in.lidar input=aggregated.las output=skewness_60_ft_5ft_to_canopy_top  z_mode=hag base_dem=aggrgated_dem.vrt zrange=5,250 method=skewness </div><div><br></div><div>z_mode would be either height above ground (hag) or datum (height from datum - default)</div><div></div></blockquote></div><br></div></span><div class="gmail_extra">I'm not sure what is z_mode=datum. Isn't this just subtract value from z (offset)?<br></div></div></blockquote><div><br></div></span><div>Hey, I was trying to be fancy:-) .  Original or absolute would work just as well.</div></blockquote></div><br></div><div class="gmail_extra">OK, "z = z - z_base_dem" is in libLAS-based r.in.lidar now [1]. See grass-dev mailing list [2].<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">Vaclav<br></div><div class="gmail_extra"><br>[1] <a href="https://lists.osgeo.org/pipermail/grass-dev/2015-September/076147.html">https://lists.osgeo.org/pipermail/grass-dev/2015-September/076147.html</a><br>[2] <a href="https://trac.osgeo.org/grass/changeset/66094">https://trac.osgeo.org/grass/changeset/66094</a><br></div></div>