Append Control Points (Data Management)

ArcGIS Pro 3.4 | | Help archive

Summary

Combines control points to an existing control point table.

The points to be appended are the results from either the Compute Tie Points tool or the Compute Control Points tool, or a point feature class.

Usage

  • If both the Z Value Field Name and the Input DEM parameters are set, the Z Value Field Name takes priority. If neither the Z Value Field Name nor the Input DEM parameter is set, the z-value is set to 0 for all ground control points (GCP) and check points.

  • Use caution when invoking the Append Option — it is applicable only when the tie points in the input and target control point table have the same transformation.

Parameters

LabelExplanationData Type
Target Control Points

The input control point table. This is usually the output from the Compute Tie Points tool.

Feature Class; Feature Layer
Input Control Points

A point feature class that stores control points. It could be the control point table created from the Compute Control Points tool, the Compute Tie Points tool, or a point feature class that has ground control points.

Feature Class; Feature Layer; File; String
Z Value Field Name
(Optional)

The field that stores the control point z-values.

If both the Z Value Field Name and the Input DEM parameters are set, the Z value field is used. If neither the Z Value Field Name nor the Input DEM parameter is set, the z-value is set to 0 for all ground control points and check points.

Field
Tag Field Name
(Optional)

A field in the input control point table that has a unique value. This field will be added to the target control point table, where the tag field can be used to bring in identifiers associated with ground control points.

Field
Input DEM
(Optional)

A DEM to use to obtain the z-value for the control points in the input control point table.

If both the Z Value Field Name and Input DEM parameters are set, the Z value field is used. If neither the Z Value Field Name nor the Input DEM parameter is set, the z-value is set to 0 for all ground control points and check points.

Mosaic Dataset; Mosaic Layer; Raster Dataset; Raster Layer
XY Accuracy
(Optional)

The input accuracy for the X and Y coordinates. The accuracy is in the same units as the Input Control Points.

This information should be provided by the data provider. If the accuracy information is not available, leave this optional parameter blank.

Double
Z Accuracy
(Optional)

The input accuracy for the vertical coordinates. The accuracy is in the units of the Input Control Points.

This information should be provided by the data provider. If the accuracy information is not available, leave this optional parameter blank.

Double
Geoid
(Optional)

The geoid correction is required by rational polynomial coefficients (RPC) that reference ellipsoidal heights. Most elevation datasets are referenced to sea level orthometric heights, so this correction would be required in these cases to convert to ellipsoidal heights.

  • Unchecked—No geoid correction is made. Use this option only if your DEM is already expressed in ellipsoidal heights. This is the default.
  • Checked—A geoid correction will be made to convert orthometric heights to ellipsoidal heights (based on EGM96 geoid).
Boolean
Area of Interest
(Optional)

Defines an area of interest extent by entering minimum and maximum x- and y-coordinates in the spatial reference of the input control point table.

Envelope; Feature Layer; Feature Class
Append Option
(Optional)

Specifies how control points will be appended to the control point table.

  • Add all pointsAdd all points in the input control point table to the target control point table, including GCPs, check points, and all tie points. This is the default.
  • Add GCPs onlyAdd only GCPs in the input point table to the target control point table.
  • Add GCPs and tie pointsAdd GCPs and tie points specifically associated with the GCPs to the target control point table.Use caution with this option—it is applicable only when the tie points in the input and target control point table have the same transformation. The tie points might not be in the desired positions if they were computed using a different adjustment process.
String

Derived Output

LabelExplanationData Type
Updated Control Points

The updated control points.

Feature Class; Feature Layer

Environments

This tool does not use any geoprocessing environments.

Licensing information

  • Basic: No
  • Standard: Yes
  • Advanced: Yes

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