Questions tagged [ntv2-transformation]
The ntv2-transformation tag has no usage guidance.
18 questions
2
votes
0
answers
42
views
Adding NTV2 transformation for Bavaria to QGIS
I have a .gsb file for the conversion but even after a lot of searches I am not sure about what to do with it or how to incorporate it into QGIS, I tried adding it to proj.db but I don't know about ...
- 21
3
votes
2
answers
359
views
Using NTv2 gridfiles in QGIS >= 3.22.x LTR with proj 9.x
This question is a follow-up to QGIS transformation defined in srs.db tbl_datum_transform table not available in Select Datum Transformations dialog
Basically it is all about making an NTv2 gridfile (*...
- 14.9k
0
votes
2
answers
565
views
Transforming using ntv2 nadgrids is behaving different between GDAL 2.3.1 and GDAL 3.4.2
I am working on upgrading to a newer version of GDAL and have an issue transforming coordinates using nadgrids (the beta2007.gsb ntv2 file which can be downloaded here) using GDAL 3.4.2.
The issue is ...
- 441
2
votes
1
answer
640
views
QGIS 3.24.1 - Problem Plugin NTv2 Datum Transformations - A failure in the SSL library occurred (_ssl.c:1129)
I'm trying to use the NTV2 Datum Transformations Plugin, but I'm not able to process it without errors (I'm using Win10). I am trying to use the transformation "[AT] Direct and inverse Vector ...
- 21
3
votes
0
answers
504
views
Using grid file transformation (.gsb) in QGIS 3.16.14
In QGIS 3.16.14-Hannover。
I want to add new grid raster files 'Beta2007_Re.gsb' (EPSG:31466 to EPSG:25832) in QGIS. I used the following way in QGIS 3.16.14, which i have used in QGIS 3.10.5:
Put '...
- 89
0
votes
0
answers
424
views
NAD83 NTv2 Transformation in QGIS
I am located in Canada and use a lot of historical data which is in NAD83 original. NAD83 original was found to be flawed, and in Canada was updated to NAD83(CSRS). I find QGIS projects CSRS quite ...
- 31
5
votes
1
answer
1k
views
Including own transformation file in QGIS 3.20
We want to roll out QGIS 3.20.3 in our state administration. Since we have our own transformation file for Hesse (a state in Germany), up to version 3.18.3 we were able to store it in the folder…/...
- 111
2
votes
0
answers
321
views
Adding custom on the fly transformation in QGIS
I'm using QGIS version 3.20.0. I need to transform EPSG:4326 into EPSG:31468 on the fly, using the equivalent of ArcGIS's "DHDN To WGS 1984 4 NTv2", i.e. with a NTv2 grid.
I've tested the ...
- 985
6
votes
3
answers
676
views
Using OSTN15 in PostGIS
I'm trying to use the OSTN15 transformation to convert ETRS (EPSG:4258) to OSGB (EPSG:27700).
I have downloaded the NTv2 data from the OS website and extracted into the proj data directory. I have ...
- 251
1
vote
0
answers
241
views
QGIS doesn't recognize BETA2007.gsb for Transformation from GK3 to UTM
I want to transform data from GK3 (EPSG:31467) to UTM(EPSG:25832) unsing the transformation grid BETA2007.gsb. BETA2007.gsb is already in the C:\Program Files\QGIS 3.10\share\proj directory.
I ...
- 2,691
1
vote
1
answer
308
views
Set transformation in Qfield
I am wondering if it is possible to set a custom transformation in Qfield. We are doing surveing in austria and unfortunately the most common Coordinate-System is not ETRS89 based.
In QGIS it is ...
- 11
1
vote
1
answer
187
views
How to get rid of the transformation grid in st_transform?
I use the last versions of R -4.0.3- and sf -0.9.6- (thus relying on PROJ version 6.3.1).
I want to transform a layer from one system of coordinates (EPSG:27572) to another (EPSG:2154). This can be ...
- 139
3
votes
1
answer
593
views
QGIS transformation defined in srs.db tbl_datum_transform table not available in Select Datum Transformations dialog
This question ist related to this post: How to use gridfiles (*.gsb) in QGIS
We have integrated our gridfile according to the answers in the referred post, and in some previous version of QGIS 3 it ...
- 14.9k
0
votes
0
answers
196
views
Using NTV2 transformations in MapInfo
I am investigating the use of MapInfo to apply transformations between GDA94 and GDA2020.
I am using MapInfo Pro 2019.1 so the NTv2.xml file has 10 entries relevant to Australia. They come in pair ...
- 191
5
votes
1
answer
1k
views
Integrating NTv2_SN.gsb grid in QGIS
I want to integrate the NTv2_SN.gsb grid in QGIS. I have a dataset in CRS EPSG:31469 and want to transform into CRS EPSG:25833. Therefore I want to integrate the NTv2_SN.gsb into QGIS. But I have some ...
- 427
0
votes
1
answer
264
views
Why does transformation of coordinates to UTM fail with GDAL in R
I have a CSV-list of coordinates that I know are coordinates in Gauß-Krüger (Transverse Mercator) and I want to transform them to UTM in R with GDAL.
I read the csv in, separated the columns, added ...
- 317
5
votes
0
answers
488
views
Adding GDA2020 NTv2 transformation to ArcGIS 10.5
The implementation of GDA2020 is drawing near! In an effort to be ready before time I have downloaded the NTv2 Grid Shift Binary (GSB) transformation grid from ISCM (available here) who are the ...
- 25.7k
9
votes
2
answers
6k
views
Using grid files (*.gsb) in QGIS
When opening a data source in EPSG:25832 in a project with crs set to EPSG:31468 I am prompted to select a datum transformation (e.g. +nadgrids=BETA2007.gsb)
The nationwide standardized grid file for ...
- 14.9k