Class Name: Reference Origin

Superclass - <SEDRIS Abstract Base>

Subclasses

Definition

An instance of this DRM class specifies a location representing the origin of the spatial reference frame in which the data was represented originally. This location is intended to convey information about how the original data was represented on the data provider's system.

Primary Page in DRM Diagram:

• 1

Secondary Pages in DRM Diagram:

Example

1. A producer's image generator is configured to understand the Local (origin offset from the UTM zone origin) Augmented (Z added) UTM reference frame the database is built in. However, the producer stored the data in SEDRIS in the Augmented UTM reference frame with the local offset removed.

   For purposes of comparison, the consumer would like to know the offset used in the original database development. This is so the producer can do direct comparisons of the producer and consumer systems using their respective image generators.

FAQs

Is the <Reference Origin> needed to properly locate the data?

No. The <Reference Origin> is not to be used for locating data. It is only intended to convey information about how the producer's native data is stored.

What would the <Reference Origin> be used for?

Correlation of data between consumer and producer.

Constraints

• <<Publishable Object>>

Composed of (two-way)

• one <Location> instance

Component of (two-way)

• one <Transmittal Root> instance

Inherited Field Elements

Field Elements

Notes

Fields Notes

srf_info

 The srf_info field specifies the spatial reference frame within
 which the given <Reference Origin> instance is defined.