Create Spot Heights (Defense Mapping)
Summary
Esri Defense Mapping cartographic production tool that creates elevation point features based on contour tops and depressions. Elevation points are created in each top and depression. Point height values are populated based on a digital elevation model.
Usage
This tool will create multiple points in areas within tops or depressions that have elevations of the same value. For example, if the tool finds two identical elevation values in different locations within the same top, it will generate a point at each location.
Tops refer to an elevation completely surrounded by lower elevation contour lines.
Depressions refer to an elevation completely surrounded by higher elevation contour lines.
Tops and depressions must be polylines that start and end at the same vertex. The tool will not create spot heights over contour lines that do not start and end at the same vertex.
Syntax
| Parameter | Explanation | Data Type |
in_contour_features |
Contours from which spot heights are computed. | Feature Layer |
contour_height_field |
Field in input contours that contains elevation values. Field type must be numeric. | Field |
in_point_features |
Existing points feature layer in which spot heights are created. | Feature Layer |
subtype |
Subtype from Spot Heights Layer in which spot height features are created. | String |
spot_height_field |
Field in the Spot Heights layer to which elevation values are written. | Field |
in_raster [in_raster,...] |
Rasters used to derive highest or lowest elevations within contour tops or depressions. | Raster Layer |
Code Sample
The following code sample demonstrates how to execute the CreateSpotHeights tool.
# set gp environment
arcpy.env.workspace="c:/data"
arcpy.env.addOutputsToMap = True
# variables for the CreateSpotHeights tool
# Contour.gdb is located in c:/data
contourFeatures="Contour.gdb/MGCP/ContourL50K"
contourHeightField="ZVH"
# defense.gdb is located in c:/data
points="defense.gdb/Features/ElevP"
subtype="SpotElevationPoint"
spotHeightField="zv2"
# raster N35.DT2 is located in c:/data/W121
raster="W121/N35.DT2"
# execute the CreateSpotHeights tool
arcpy.CreateSpotHeights_defense(contourFeatures, contourHeightField, points, subtype, spotHeightField, raster)