Hi again Andre and Marco,
I've been investigating and the latest version of EPSG database (v8.4) already
incorporates a lot of changes compared to the datum_shift.csv from gdal.
tfm 1571 is a bug in the EPSG database. It should be Amersfoort to
ETRS89 (1), but somehow the source CRS got
Hi Andre!
tfm 1571 is a bug in the EPSG database. It should be Amersfoort to
ETRS89 (1), but somehow the source CRS got wrong.
It was deprecated in 2001, and replaced by tfm 1751 (4289 to 4258) under
the same name.
For some reasons, EPSG still keeps it in its database, marked
Original Message
Subject: Re: [Qgis-developer] Datum Transformation - parameters for
mainland Portugal
Date: Fri, 20 Jun 2014 09:35:00 +0200
From: Marco Hugentobler marco.hugentob...@sourcepole.ch
To: Pedro Venâncio pedrongvenan...@yahoo.com
Hi Pedro
Added two
Hi Marco.
Added two ntv2 entries and updated two entries, hope it is correct now.
Great Marco, it is working now with ntv2 grids.
Since there is now a duplication, I think you can delete the grids entry with
coord_op_code 14 and 17.
I still feel uncomfortable to delete / update
Since there is now a duplication, I think you can delete the grids entry with
coord_op_code 14 and 17.
With which other entries are they duplicated? Seems to me there are no two
entries with same source_srs / dest_src / gsb file ?
No, those parameters that have +towgs84=565.04(...)
Hi again,
- Mensagem original -
DE: Pedro Venâncio
However I came across something quite odd. In the Datum
Transformation window, automatically arise some strange transformations (red
in
the image http://goo.gl/iIWOuw). These transformations give huge errors, and
I
do
Hi Marco,
Since there is now a duplication, I think you can delete the grids entry
with coord_op_code 14 and 17.
With which other entries are they duplicated? Seems to me there are no two
entries with same source_srs / dest_src / gsb file ?
coord_op_code 14 uses the
Am 20.06.2014 13:41, schrieb Marco Hugentobler:
No, those parameters that have +towgs84=565.04(...) are not associated
with any portuguese transformation. These parameters belong to epsg_nr
1571. The only point of contact between this entry and the portuguese
entries, is that both uses 4258
