arcpy.3d.AppendTerrainPoints(in_terrain, terrain_feature_class, in_point_features, {polygon_features_or_extent})
|
Name
|
Explanation
|
Data type
|
|
in_terrain
|
The terrain dataset that will be processed.
|
Terrain Layer
|
|
terrain_feature_class
|
The feature class that contributes to the terrain dataset into which the points or multipoints will be added.
This parameter only requires the name of the feature class and not its full path.
|
String
|
|
in_point_features
|
The feature class of points or multipoints to add as an additional data source for the terrain dataset.
|
Feature Layer
|
|
polygon_features_or_extent
(Optional)
|
Specify a polygon feature class or arcpy.Extent object to define the area where point features will be added. This parameter is empty by default, which results in all the points from the input feature class being loaded to the terrain feature.
|
Extent; Feature Layer
|
Derived output
|
Name
|
Explanation
|
Data type
|
|
derived_out_terrain
|
The updated terrain.
|
Terrain Layer
|
Code sample
AppendTerrainPoints example 1 (Python window)
The following sample demonstrates the use of this tool in the Python window:
arcpy.env.workspace = 'C:/data'
arcpy.ddd.AppendTerrainPoints('sample.gdb/featuredataset/terrain',
'existing_points', 'new_points.shp')
AppendTerrainPoints example 2 (stand-alone script)
The following sample demonstrates the use of this tool in a stand-alone Python script:
'''****************************************************************************
Name: Update Terrain
Description: This script demonstrates how to update a terrain dataset
with new elevation measurements obtained from Lidar by
importing LAS files to multipoint features, then appending the
new points to another multipoint feature that participates in a
terrain. The terrain's pyramids are modified to optimize its
draw speed.
****************************************************************************'''
# Import system modules
import arcpy
try:
# Set environment settings
arcpy.env.workspace = "C:/data"
# Set Variables
inTerrain = "sample.gdb/featuredataset/terrain"
currentPts = "existing_points"
lasFiles = ['las/NE_Philly.las',
'las/NW_Philly.las']
newPts = 'in_memory/update_pts'
# Define spatial reference of LAS files using factory code
# for NAD_1983_StatePlane_Pennsylvania_South
lasSR = arcpy.SpatialReference(2272)
arcpy.AddMessage("Converting LAS files to multipoint features...")
arcpy.ddd.LASToMultipoint(lasFiles, newPts, 1.5, 2, 1,
'INTENSITY', lasSR)
arcpy.AddMessage("Appending LAS points to {0}..."\
.format(currentPts))
arcpy.ddd.AppendTerrainPoints(inTerrain, currentPts, newPts)
arcpy.AddMessage("Changing terrain pyramid reference scales...")
arcpy.ddd.ChangeTerrainReferenceScale(inTerrain, 1000, 500)
arcpy.ddd.ChangeTerrainReferenceScale(inTerrain, 2500, 2000)
arcpy.AddMessage("Adding terrain pyramid level...")
arcpy.ddd.AddTerrainPyramidLevel(inTerrain, "", "4 4500")
arcpy.AddMessage("Changing pyramid resolution bounds for breaklines...")
arcpy.ddd.ChangeTerrainResolutionBounds(inTerrain, "breaklines", 5, 4)
arcpy.AddMessage("Building terrain...")
arcpy.ddd.BuildTerrain(inTerrain)
arcpy.AddMessage("Completed updates.")
except arcpy.ExecuteError:
print(arcpy.GetMessages())
except Exception as err:
print(err)