Feature request #9352
update 7 parameter transformation fir Israel ITM grid
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Projection Support | ||
| Pull Request or Patch supplied: | No | Resolution: | up/downstream |
| Easy fix?: | No | Copied to github as #: | 17954 |
Description
Please update +towgs84 parameter for the Israel ITM grid (EPSG:2039).
The 7 parameter transformation is officially published at the Israel mapping service:
http://www.mapi.gov.il/AboutUs/NewsAndUpdates/Documents/IGD.pdf
These are the parameters from WGS to Israel grid so for +towgs84 I guess we need to change the sign of the parameters shown below:
X -24.0024 m
Y -17.1032 m
Z -17.8444 m
Rotation
RX -0.0000016003 rad= -0."33009
RY -0.0000089821 rad= -1."85269
RZ 0.0000080949 rad= 1."66969
Scale Factor
m =1.0000054248 =5.4248 PPM
History
#1
Updated by Andre Joost almost 8 years ago
This should be reported to the Proj4 bug tracker, because QGIS takes all CRS from there.
Proj4 only uses valid EPSG transformations, and EPSG only knows EPSG::1073 with 3 parameters.
http://www.epsg-registry.org/ notes:
Remarks: For more accurate transformation contact Survey of Israel.
So you will have to convince EPSG to make a Revision according to the official 7-parameters you found in the document, then Proj will adopt these, and QGIS will follow.
#2
Updated by Paolo Cavallini over 7 years ago
- Category set to Projection Support
#3
Updated by Giovanni Manghi over 4 years ago
- Easy fix? set to No
#4
Updated by Nyall Dawson over 2 years ago
- Resolution set to up/downstream
- Status changed from Open to Closed
- Description updated (diff)
With QGIS 3.8 and the release of proj 6 library, any remaining projection definition related issues now should be filed with the proj project.