NGDC Hydrographic Surveys Data Exchange (HYD93) Quick Facts

About Quick Facts Tables

Format Type Identifier

HYD93

Reader/Writer

Both

Licensing Level

Professional

Dependencies

None

Dataset Type

File

Feature Type

Trackline

Typical File Extensions

.a93 .b93

Automated Translation Support

Yes

User-Defined Attributes

Yes

Coordinate System Support

LL-84 required

Generic Color Support

No

Spatial Index

Never

Schema Required

Yes

Transaction Support

No

Geometry Type

hyd93_type

Encoding Support

No

NGDC Hydrographic Surveys Data Exchange (HYD93) Geometry Support

Geometry

Supported?

aggregate

no

circles

no

circular arc

no

donut polygon

no

elliptical arc

no

ellipses

no

line

no

none

no

point

yes

polygon

no

raster

no

solid

no

surface

no

text

no

z values

yes