Dimensional Measuring Interface
Standard
Standard Improvement Request
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SIR No. 97-70 DMIS Release 3.0 SIR Type Other Severity Documentation Deficiency Status Resolved Date Submitted August 18 1997 Date Validated August 18 1997 Date In Process Date Referred Date Vote Pending Date Closed August 20 1998 Action Clarifications Submitted By Thomas Kramer NIST Room B-124, Bldg. 220 Gaithersburg MD 20899 USA Phone: (301)975-3518 Fax: (301)990-9866 kramer@cme.nist.gov |
Problem Topic
DATSET: Initial CS clarification
Problem Description
Note: This is the first of four SIRs relating to DATSET on pages 17 to 19
(section 3.5). Last week I sent in four SIRs concerning DATSET on pages
113 and 114.
This section does not say what coordinate system is in effect at the beginning of a program.
This raises several questions. Is there a default system in effect? If so, presumably it is MCS. If there is no default system in effect, if a feature is defined, how can it be located? Is it required that a coordinate system be specified before any features can be defined?
References
None
Related SIRs
None
Suggested Resolution
My preferred resolution is to rethink and rewrite DATSET.
To fix only this specific problem, add a sentence describing how it is determined what coordinate system is in effect (if any) when a program starts. If no coordinate system is in effect at the beginning of a program, add a second sentence saying a coordinate system must be defined before any features are defined.
Support Documentation
None
Resolution
Warning!!
The following statement is only a resolution to a Standard Improvement Request (SIR) and is NOT part of the current DMIS standard, nor is it guaranteed to become part of the next revision of the DMIS standard even if voted and accepted by the DMIS National Standards Committee. This resolution is tentative because it may not be incorporated into the next version of the standard, it could be changed prior to the next release, or it could be changed as the result of the "public review and comment" period required for the next version of the standard. If you choose to use this tentative resolution, you do so at your own risk since at this time it is not part of the DMIS standard.
There are no default settings. See section 3.1.3.5 for clarification.
Attachments
None
Notes
Added by Mike Holloway, hkm@ornl.gov on 7/31/1998
See section 3.1.3.5 for clarification.
Added by Interpretation Subcommittee, hkm@ornl.gov on 8/7/1998
There are no default settings. See section 3.1.3.5 for clarification.