|
@@ -189,8 +189,8 @@ and adjust bounds and/or resolution as needed before proceeding.
|
|
Typical commands to create a DEM using a regularized spline fit:
|
|
Typical commands to create a DEM using a regularized spline fit:
|
|
<div class="code"><pre>
|
|
<div class="code"><pre>
|
|
r.univar lidar_min
|
|
r.univar lidar_min
|
|
- r.to.vect -z feature=point in=lidar_min out=lidar_min_pt
|
|
|
|
- v.surf.rst layer=0 in=lidar_min_pt elev=lidar_min.rst
|
|
|
|
|
|
+ r.to.vect -z type=point in=lidar_min out=lidar_min_pt
|
|
|
|
+ v.surf.rst in=lidar_min_pt elev=lidar_min.rst
|
|
</pre></div>
|
|
</pre></div>
|
|
|
|
|
|
|
|
|
|
@@ -215,9 +215,9 @@ Ridge, NC, LIDAR dataset</a>, and process into a clean DEM:
|
|
# check number of non-null cells (try and keep under a few million)
|
|
# check number of non-null cells (try and keep under a few million)
|
|
r.univar lidar_min | grep '^n:'
|
|
r.univar lidar_min | grep '^n:'
|
|
# convert to points
|
|
# convert to points
|
|
- r.to.vect -z feature=point in=lidar_min out=lidar_min_pt
|
|
|
|
|
|
+ r.to.vect -z type=point in=lidar_min out=lidar_min_pt
|
|
# interpolate using a regularized spline fit
|
|
# interpolate using a regularized spline fit
|
|
- v.surf.rst layer=0 in=lidar_min_pt elev=lidar_min.rst
|
|
|
|
|
|
+ v.surf.rst in=lidar_min_pt elev=lidar_min.rst
|
|
# set color scale to something interesting
|
|
# set color scale to something interesting
|
|
r.colors lidar_min.rst rule=bcyr -n -e
|
|
r.colors lidar_min.rst rule=bcyr -n -e
|
|
# prepare a 1:1:1 scaled version for NVIZ visualization (for lat/lon input)
|
|
# prepare a 1:1:1 scaled version for NVIZ visualization (for lat/lon input)
|
|
@@ -301,4 +301,5 @@ New Zealand</i><br>
|
|
Extended by Volker Wichmann to support the aggregate functions
|
|
Extended by Volker Wichmann to support the aggregate functions
|
|
<i>median, percentile, skewness</i> and <i>trimmed mean</i>.
|
|
<i>median, percentile, skewness</i> and <i>trimmed mean</i>.
|
|
|
|
|
|
-<p><i>Last changed: $Date$</i>
|
|
|
|
|
|
+<p>
|
|
|
|
+<i>Last changed: $Date$</i>
|