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Dictionary

Dictionary symbology is used to symbolize layers using a dictionary of symbols configured with multiple attributes. This approach is used when symbol specifications lead to many symbol permutations that would be inappropriate for unique value symbology.

With dictionary symbology, the symbolization of the features in the layer is based on one or more attributes that connect to a dictionary of rules for displaying the symbol. ArcGIS Pro supports the following symbol specifications as dictionaries: Joint Military Symbology specifications MIL-STD-2525B Change 2, MIL-STD-2525C, and MIL-STD-2525D as well as NATO Joint Military Symbology specifications APP-6(B), and APP-6(D).

Text fields are used to display text symbols based on data from attribute fields. Display options are set under the Configuration heading.

Set dictionary symbology

To configure the dictionary symbology, follow these steps:

  1. With a feature layer selected in the Contents pane, under Feature Layer, on the Appearance tab, in the Drawing group, click the Symbology drop-down arrow.
  2. Under the Symbolize your layer using symbol attributes heading, click Dictionary.
  3. From the Dictionary drop-down arrow, choose the dictionary that will be used to symbolize the data.
  4. Under the Symbology fields and Text fields headings, choose the symbology and text fields for the data.

    For each field, you can choose <none> to prevent symbol or text display for that field.

  5. Under the Configuration heading, set the options described below to refine the symbols.

    Frame

    Applies to the surrounding frame of the symbol.

    Fill

    Applies to the interior area within the frame.

    Icon

    Applies to the main icon of the symbol.

    Modifiers

    Applies to the modifiers associated with the main icon.

    Amplifiers

    Applies to any of the graphic amplifiers that are displayed surrounding the frame.

    Text

    Applies to the text fields. These can be turned off so they don't display, but the mapping is retained.

Dictionary display configuration examples

Use the settings under the Configuration heading to refine the symbology. The following table shows examples of two dictionary symbols with different configuration combinations.

Symbols
Modifiers

Frame: On

Fill: On

Icon: On

Modifiers: On

Amplifiers: On

Frame: On

Fill: Off

Icon: On

Modifiers: On

Amplifiers: On

Frame: Off

Fill: On

Icon: On

Modifiers: On

Amplifiers: Off

Frame: On

Fill: On

Icon: Off

Modifiers: Off

Amplifiers: On

Frame: On

Fill: On

Icon: On

Modifiers: Off

Amplifiers: Off

Frame: Off

Fill: On

Icon: Off

Modifiers: Off

Amplifiers: Off

Frame: Off

Fill: Off

Icon: Off

Modifiers: Off

Amplifiers: Off