OSGB OSTN15 supported?

veddycent
Global Mapper User
Hi all,
I'm currently using v20.1 and wondering whether GM is using OSTN02 or OSTN15 for OSGB36 transforms?
I came across the same question on here from 2018 but doesnt have a response so I'm asking again.
Any help would be much appreciated.
Regards
V
I'm currently using v20.1 and wondering whether GM is using OSTN02 or OSTN15 for OSGB36 transforms?
I came across the same question on here from 2018 but doesnt have a response so I'm asking again.
Any help would be much appreciated.
Regards
V
Tagged:
Answers
-
To add to the above. I imported a KMZ which has been exported from Arc using NTv2 OSTN02 and loaded into GM with the original SHP and a KMZ exported from GM.
The SHP and KMZ from GM matched perfectly but the KMZ from ArcGis did not. I assume its because Arc is using a newer projection than GM.
Is there any way to add the newer projection to GM?
Any help would be much appreciated.
Regards
V -
I do support the request of @veddycent to embed the NTv2 OSTN15 transformation in GM (this is widely used nowadays).OSTN15 transformation (OSGB36 to ETRS89 NTv2 version) has EPSG code 7709, Ordance Survey has published a toolpack for developers on their site:
https://www.ordnancesurvey.co.uk/business-government/tools-support/os-net/for-developers) -
Hello,
We have an open feature request (GM-6663) to add support for the OSTN15 transformation. I have added your information to the feature request and bumped up the number of users requesting this. Thank you.
Cheers,
Bob -
Much appreciated, thanks!
-
Please add myself to the OSTN15 user request list!
-
When I re-project from WGS84 to OSTN15 using either the OS GridInquest II software, or my Trimble software, I get a result thats within 2mm of each other. When I try this with the Global Mapper demo my result is more than a metre out.
Categories
- 12.6K All Categories
- 5.5K Features Discussion
- 337 Downloading Imagery
- 1.3K Elevation Data
- 379 Georeferencing Imagery Discussion
- 620 GM Script Language
- 52 User Scripts
- 113 GPS Features
- 405 Projection Questions
- 815 Raster Data
- 1.3K Vector Data
- 6.5K Support
- 172 Announcement and News
- 900 Bug Report
- 558 SDK
- 1.2K Suggestion Box
- 3.7K Technical Support
- 559 Other Discussion
- 129 GIS Data Sources
- 27 Global Mapper Showcase
- 231 How I use Global Mapper
- 106 Global Mapper Forum Website