[Fwd: Re: [Geotiff] Linear_Foot_Modified_American = 9004]

[Max Martinez]

FYI, in 2001 it appears that EPSG / OGP updated the rules for
deprecation so you won't find yourself in this boat anymore:

>From July 2001 (effective version 6.1 of the dataset) the following
rules will be adhered to:
(i) No record will be deleted from the database.
(ii) If critical data is in error:
(a) the erroneous record will have its deprecated flag set. No other
change will be
made to the deprecated record.
(b) the error will be corrected through the introduction of a
replacement record. This
replacement record will have a new code allocated but will carry the
same name
as the original (except when it is the name in the deprecated record
that is in
error). The revision_date of this new record will be set to the date of
the
deprecation and replacement.
(c) all records that are dependent upon the deprecated record (for
example, projected
coordinate reference systems using a deprecated projection) will
themselves be
deprecated and replaced as described in (a) and (b) above.
(d) a change record will be entered into the Change table.
(e) details describing the reason for deprecation and the deprecation
and replacement
path will also be recorded in an associated Deprecation table.
(iii) Spurious or bogus records that are deprecated will not be
replaced.
(iv) Records with the deprecated field set to "yes" or "1" are no longer
valid. Conversely,
records with the deprecated field set to "no" or "0" are valid.
(v) In many cases of deprecation and replacement, the name will be
retained. For any one
name, in any one table there will be no more than one valid record, i.e.
no more than one
record with the deprecated field set to "no". An exception to this rule
is made within the
CRS table where CRSs of type geocentric, geographic 3D and geographic 2D
which are
1 Prior to July 2001, erroneous data was corrected either through
amendment or deletion and replacement of the record.
Changes to critical data were recorded in the change table, the change
record identifier included in the amended data
record and the date of the record changed to the date that the change
was implemented. If non-critical data was
amended the action may have been recorded in the change table, but
regardless of this a change record identifier was
not included in the amended data record.

-----Original Message-----
From: geotiff-bounces at lists.maptools.org
[mailto:geotiff-bounces at lists.maptools.org] On Behalf Of Frank Weed II
Sent: Friday, April 11, 2008 11:38 AM
To: geotiff at lists.maptools.org
Subject: [Fwd: Re: [Geotiff] Linear_Foot_Modified_American = 9004]

    Take two.  It's obviously a Friday after a long night working on 
taxes ;)

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