#1196 closed bug (invalid)
projection parameter +no_uoff is not applied to layer SRS; affects Michigan GeoRef
Reported by: | smizuno | Owned by: | nobody |
---|---|---|---|
Priority: | major: does not work as expected | Milestone: | |
Component: | Projection Support | Version: | Trunk |
Keywords: | projection georef | Cc: | |
Must Fix for Release: | No | Platform: | All |
Platform Version: | Awaiting user input: | no |
Description
background: the PROJ.4 definitions for Michigan GeoRef (EPSG:3078, 3079) don't work properly unless +no_uoff is included in the definition. There is PROJ.4 mailing list traffic about this.
A Custom Projection can be created for Michigan GeoRef by copying the 3078 parameters and adding +no_uoff. This can be saved ok and the parameters test ok.
When this custom projection is applied to a layer the +no_uoff parameter disappears from the SRS string on the General tab of layer properties and the layer is not projected properly.
Note:
See TracTickets
for help on using tickets.
Current stable GDAL interprets EPSG:3078 in the following way:
As you see there is no no_uoff parameter above. Since QGIS CRS is created according to GDAL's interpretation of EPSG codes (epsg_tr.py output) this is not a QGIS issue but a GDAL one.
Please report it to GDAL devs. Once it is fixed in GDAL (i.e. epsg_tr.py produces a correct proj4 representation of EPSG codes in question) add a notice to this ticket and QGIS CRS database will be updated.