SRF templates
SRF Template (SRFT)
- ORM constraints and CS parameters binding.
- Unbound CS parameters (if any) become SRFT parameters.
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SRF instance of a template
- ORM specified, and
- SRFT parameters are specified.
- All standardized SRF in the SRM are SRFT instances.
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SRF sets
- A fixed (standard/registered) indexed set of SRFT instances for a given ORM.
- Examples : UTM - zone code and hemisphere GCS - index code PS - polar aspect code