Geostatistical Analyst のライセンスで利用可能。
概要
Exports a geostatistical layer to points. The tool can also be used to predict values at unmeasured locations or to validate predictions made at measured locations.
使用法
For data formats that support Null values, such as file geodatabase feature classes, a Null value will be used to indicate that a prediction could not be made for that location or that the value should be ignored when used as input. For data formats that do not support Null values, such as shapefiles, the value of -1.7976931348623158e+308 is used (this is the negative of the C++ defined constant DBL_MAX) to indicate that a prediction could not be made for that location.
If a validation z-field is supplied, the predictions and standard errors are calculated differently than if a validation field is not supplied. For more information, see the following reference:
- Krivoruchko, K., A. Gribov, and J. M. Ver Hoef, 2006, "A new method for handling the nugget effect in kriging," T. C. Coburn, J. M. Yarus, and R. L. Chambers, Eds., Stochastic modeling and geostatistics: Principles, methods, and case studies, volume II: AAPG Computer Applications and Geology 5, p. 81–89.
構文
arcpy.ga.GALayerToPoints(in_geostat_layer, in_locations, {z_field}, out_feature_class, {append_all_fields})
パラメーター | 説明 | データ タイプ |
in_geostat_layer | The geostatistical layer to be analyzed. | Geostatistical Layer |
in_locations | Point locations where predictions or validations will be performed. | Feature Layer |
z_field (オプション) | If this field is left blank, predictions are made at the location points. If a field is selected, predictions are made at the location points, compared to their Z_value_field values, and a validation analysis is performed. | Field |
out_feature_class | The output feature class containing either the predictions or the predictions and the validation results. The fields in this feature class can include the following fields (where applicable):
| Feature Class |
append_all_fields (オプション) | Determines whether all fields will be copied from the input features to the output feature class.
| Boolean |
コードのサンプル
GALayerToPoints example 1 (Python window)
Export a geostatistical layer to a point feature class.
import arcpy
arcpy.env.workspace = "C:/gapyexamples/data"
arcpy.GALayerToPoints_ga("C:/gapyexamples/data/kriging.lyr",
"C:/gapyexamples/data/obs_pts.shp",
"", "C:/gapyexamples/output/krig_pts")
GALayerToPoints example 2 (stand-alone script)
Export a geostatistical layer to a point feature class.
# Name: GALayerToPoints_Example_02.py
# Description: Exports a geostatistical layer to points.
# Requirements: Geostatistical Analyst Extension
# Import system modules
import arcpy
# Set environment settings
arcpy.env.workspace = "C:/gapyexamples/data"
# Set local variables
inLayer = "C:/gapyexamples/data/kriging.lyr"
inPoints = "C:/gapyexamples/data/obs_pts.shp"
zField = ""
outPoints = "C:/gapyexamples/output/krig_pts"
# Check out the ArcGIS Geostatistical Analyst extension license
arcpy.CheckOutExtension("GeoStats")
# Execute GALayerToPoints
arcpy.GALayerToPoints_ga(inLayer, inPoints, zField, outPoints)
環境
ライセンス情報
- Basic: 次のものが必要 Geostatistical Analyst
- Standard: 次のものが必要 Geostatistical Analyst
- Advanced: 次のものが必要 Geostatistical Analyst