Geographic Data Management System (GDMS) Feature Representation

In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Type Attributes), this format also adds format-specific attributes (Format Attributes).

GDMS features consist of both geometry and attributes. The attributes on the features depend on whether the feature is a result of input VERTICES and CROSSREF files, or whether it is from a TEXTDATA file.

The gdms_feature_type identifies the entity’s geometric type and has these ranges:

  • gdms_annotation
  • gdms_line
  • gdms_point
  • gdms_polygon
  • gdms_text_line
  • gdms_text_polygon
  • gdms_text_symbol

Annotations

gdms_type: gdms_annotation

GDMS annotations represent point features in 2D and have the following specific attributes:

  • gdms_text
  • gdms_angle
  • gdms_height
  • gdms_text_layer_number

Lines

gdms_type: gdms_line

GDMS line features represent linear features in 2D. Line features do not have any specific attributes.

gdms_type: gdms_text_line

GDMS line features represent linear features in 2D. Line features do not have any specific attributes.

Points

gdms_type: gdms_point

GDMS point features represent point features in 2D. Point features do not have any specific attributes.

gdms_type: gdms_text_symbol

GDMS text symbols represent point features in 2D and have the following specific attributes:

  • gdms_angle
  • gdms_length
  • gdms_size
  • gdms_symbol_number
  • gdms_text_layer_number

Polygons

gdms_type: gdms_polygon

GDMS polygon features represent polygon features in 2D. Polygon features do not have any specific attributes.

gdms_type: gdms_text_polygon

GDMS text polygon features represent polygon features in 2D. Polygon features do not have any specific attributes.