Thanks Hamish,
I assumed it needed to be looked at with GDAL/OGR first when exporting
to a shapefile, I just wasn't sure if this was also the case when using
g.proj -e.
On 13-06-03 04:19 PM, GRASS GIS wrote:
#1988: towgs84 datum transform options not maintained with shapefile export
--------------------------------+-------------------------------------------
Reporter: voncasec | Owner: grass-dev@…
Type: defect | Status: new
Priority: normal | Milestone: 6.4.3
Component: Projections/Datums | Version: unspecified
Keywords: g.proj, v.out.ogr | Platform: Linux
Cpu: x86-64 |
--------------------------------+-------------------------------------------
Changes (by hamish):
* component: Default => Projections/Datums
Comment:
Yes, it's a known issue, and it needs to be solved in GDAL/OGR first. If I
recall correctly, WKT doesn't have a defined way to include datum
transforms, ISTR some time ago (older than that ticket) Frank suggested it
could be packed into something like a comment term, but then that would
only be known to other osgeo-stack software which knew to look for it.
Also, the proj4 epsg file includes explicit +towgs84 terms for some SRSs,
but others not (several options for the user to choose from under the
umbrella of the generalized code); the one referred to in the gdal ticket
(epsg:4632) is one of the ones with explicit +towgs84 terms in the epsg
def'n.
?,
Hamish
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