Letter Features (Defense)

ArcGIS Pro 3.4 | | Help archive

Summary

Adds a sequential letter to a new or existing field of a set of features.

Usage

  • Adding a sequential letter scheme to an existing field will overwrite the values in that field.

  • Features outside of the Input Area to Letter parameter value will automatically set the Field to Letter (Existing or New) parameter to Null.

  • When naming a new field to letter in the Field to Letter (Existing or New) parameter, the first letter must be an alpha character, and the remaining letters must be alphanumeric or underscores.

  • When lettering features other than points, all features that are contained in or intersect the Input Area to Letter parameter value will be lettered.

Parameters

LabelExplanationData Type
Input Features

The input features that will be lettered.

Feature Set
Field to Letter (Existing or New)

The input field that will be lettered. The field must be a new or existing text field.

Field
Input Area to Letter
(Optional)

The area that will limit the features to letter; only features within this area will be lettered.

Feature Set
Spatial Sort Method
(Optional)

Specifies how features will be spatially sorted for the purpose of lettering. Features are not reordered in the table.

  • Upper rightFeatures will be sorted starting at the upper right corner. This is the default.
  • Upper leftFeatures will be sorted starting at the upper left corner.
  • Lower rightFeatures will be sorted starting at the lower right corner.
  • Lower leftFeatures will be sorted starting at the lower left corner.
  • Peano curveFeatures will be sorted using a space-filling curve algorithm, also known as a Peano curve.
  • CenterFeatures will be sorted starting from a center point (the mean center will be used if no center is provided).
  • ClockwiseFeatures will be sorted starting from a center point and moving clockwise.
  • CounterclockwiseFeatures will be sorted starting from a center point and moving counterclockwise.
  • NoneNo spatial sort will be used. The same order as the feature class will be used.
String
Lettering Format
(Optional)

Specifies the labeling format that will be used for each feature.

  • Excel (A, B, C, ...)An alpha character (for example, A, B, C) will be used. This is the default.
  • Grid (AA, AB, AC, ...)A constant alpha character with an incrementing second alpha character grid (for example, AA, AB, AC) will be used.
  • Alternating Grid (AA, BB, CC, ...)A double alpha character that is incremented for each feature (for example, AA, BB, CC) will be used.
String
Starting Letter
(Optional)

The value that will be used to begin lettering.

String
Omit Letters
(Optional)

The values that will be omitted from the lettering sequence.

String
Center Point
(Optional)

The center point that will be used to sort and letter features.

Feature Set
Add Distance and Bearing to Center
(Optional)

Specifies whether fields will be added to the output for distance and bearing to a center point.

  • Do not add distance and bearingNo distance or bearing fields will be added to the output. This is the default.
  • Add distance and bearingDIST_TO_CENTER and ANGLE_TO_CENTER fields will be added to the output.
Boolean

Derived Output

LabelExplanationData Type
Output Feature Class

The updated feature class.

Feature Class

Licensing information

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

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