TOWGS84 Parameters Producing Error in Projecting Points to NAD83 UTM
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Key: GEOT-3451
URL: http://jira.codehaus.org/browse/GEOT-3451
Project: GeoTools
Issue Type: Bug
Affects Versions: 2.7-RC2
Reporter: Lonnie Matsuno
Points projected from EPSG:4326 to NAD83 UTM is introducing error due to
changes in TOWGS84 parameters. This was observed in the 2.7 EPSG WKT, but I
believe it has been there in older and current releases of EPSG hsql as well.
Example:
In 2.6.5 (TOWGS84[0,0,0]) projecting a point -114.0, 51.0 to EPSG:26911
produced a
point: 710488.8570345972, 5654109.178707749
In 2.7-RC2 (TOWGS84[1.0, 1.0, -1.0, 0.0, 0.0, 0.0, 0.0]) produced a
point: 710488.3667198857, 5654108.761620307
Independent projections of the same point in ArcGIS produces: 710488.857,
5654109.179
and gdaltransform produces: 710488.85703878 5654109.17860521, which are
comparable with what older geotools versions generate.
Not sure how many CRSs this affects.
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