TIGER/GML Quick Facts

About Quick Facts Tables

Format Type Identifier

GML

Reader/Writer

Varies, depending on GML format

Licensing Level

Professional and above

Dependencies

None

Dataset Type

File or URL

Feature Type

Varies, depending on the GML application schema

Typical File Extensions

.gml, .gz, .xml

Automated Translation Support

Yes

User-Defined Attributes

Yes

Coordinate System Support

Yes

Generic Color Support

No

Spatial Index

Never

Schema Required

Yes

Transaction Support

No

Geometry Type

xml_type

Geometry Support

Geometry

Supported?

aggregate

yes

circles

no

circular arc

yes

donut polygon

yes

elliptical arc

no

ellipses

no

line

yes

none

yes

point

yes

polygon

yes

raster

no

solid

no

surface

no

text

no

z values

yes