Summary
Interpolates a raster using z-values from a terrain dataset.
Usage
The resolution parameter indicates which pyramid level of the terrain to use for conversion. Pyramid levels are defined using the z-tolerance or window-size pyramid types. For more information on terrain pyramids, see Terrain Pyramids.
To extract a subset of the terrain, define the extent using the geoprocessing environment settings.
The Linear and Natural neighbor interpolation options are applied through the triangulated terrain surface. The linear option finds the triangle encompassing each cell center and applies a weighted average of the triangle's nodes to interpolate a value. The natural neighbors option uses area-based weights on Voronoi neighbors.
Syntax
TerrainToRaster(in_terrain, out_raster, {data_type}, {method}, {sample_distance}, {pyramid_level_resolution})
Parameter | Explanation | Data Type |
in_terrain | The terrain dataset to process. | Terrain Layer |
out_raster | The location and name of the output raster. When storing a raster dataset in a geodatabase or in a folder such as an Esri Grid, no file extension should be added to the name of the raster dataset. A file extension can be provided to define the raster's format when storing it in a folder, such as .tif to generate a GeoTIFF or .img to generate an ERDAS IMAGINE format file. If the raster is stored as a TIFF file or in a geodatabase, its raster compression type and quality can be specified using geoprocessing environment settings. | Raster Dataset |
data_type (Optional) | Specifies the type of numeric values stored in the output raster.
| String |
method (Optional) | The interpolation method that will be used to calculate cell values.
| String |
sample_distance sampling_method distance (Optional) | The sampling method and distance used to define the cell size of the output raster. | String |
pyramid_level_resolution (Optional) | The z-tolerance or window-size resolution of the terrain pyramid level that will be used by this tool. The default is 0, or full resolution. | Double |
Code sample
TerrainToRaster example 1 (Python window)
The following sample demonstrates the use of this tool in the Python window.
import arcpy
from arcpy import env
arcpy.CheckOutExtension("3D")
env.workspace = "C:/data"
arcpy.TerrainToRaster_3d("sample.gdb/featuredataset/terrain", "terrain.img", "INT", "LINEAR", "CELLSIZE 10", 2.5)
TerrainToRaster example 2 (stand-alone script)
The following sample demonstrates the use of this tool in a stand-alone Python script.
'''*********************************************************************
Name: TerrainToRaster Example
Description: This script demonstrates how to use the
TerrainToRaster tool.
**********************************************************************'''
# Import system modules
import arcpy
from arcpy import env
import exceptions, sys, traceback
try:
arcpy.CheckOutExtension("3D")
# Set environment setting
env.workspace = "C:/data"
# Set Local Variables
terrain = "sample.gdb/featuredataset/terrain"
bitType = "INT"
method = "LINEAR"
sampling = "CELLSIZE 10"
pyrLvl = 2.5
outRas = arcpy.CreateUniqueName("terrain_level.img")
#Execute TerrainToRaster
arcpy.ddd.TerrainToRaster(terrain, outRas, bitType,
method, sampling, pyrLvl)
arcpy.CheckInExtension("3D")
except arcpy.ExecuteError:
print arcpy.GetMessages()
except:
# Get the traceback object
tb = sys.exc_info()[2]
tbinfo = traceback.format_tb(tb)[0]
# Concatenate error information into message string
pymsg = 'PYTHON ERRORS:\nTraceback info:\n{0}\nError Info:\n{1}'\
.format(tbinfo, str(sys.exc_info()[1]))
msgs = 'ArcPy ERRORS:\n {0}\n'.format(arcpy.GetMessages(2))
# Return python error messages for script tool or Python Window
arcpy.AddError(pymsg)
arcpy.AddError(msgs)
Environments
Licensing information
- Basic: Requires 3D Analyst
- Standard: Requires 3D Analyst
- Advanced: Requires 3D Analyst