[postgis-devel] [PostGIS] #1742: PostGIS 2.0 alters Z-coordinate

[PostGIS]

#1742: PostGIS 2.0 alters Z-coordinate
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 Reporter:  pramsey   |       Owner:  pramsey      
     Type:  defect    |      Status:  new          
 Priority:  critical  |   Milestone:  PostGIS 2.0.0
Component:  postgis   |     Version:  2.0.x        
 Keywords:            |  
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Comment(by pramsey):

 Er, edit, PostGIS 2.0 uses this for EPSG:23030
 {{{
 +proj=utm +zone=30 +ellps=intl +towgs84=-87,-98,-121,0,0,0,0 +units=m
 +no_defs
 }}}
 and PostGIS 1.5 uses this
 {{{
 +proj=utm +zone=30 +ellps=intl +units=m +no_defs
 }}}
 Anyways, the problem is as described. We're getting a grid shift, and
 Proj4.8 does the vertical shift as well as the horizontal.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1742#comment:3>
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