Bug report #10480
Georeferencer truncates coordinates to 2 decimals
|Affected QGIS version:||2.6.0
|Pull Request or Patch supplied:||No
|Crashes QGIS or corrupts data:||No
||Copied to github as #:||18892
When entering target coordinates in Georeferencer, the GCP table shows only 2 decimal values. I believe the full value is stored internally, but while transforming, the Georeferencer uses the truncated value. This is especially problematic if the GCP points are close by and truncating the coordinates to 2 decimal shifts the GCPs to a completely wrong location.
This was reported in the user list in 2011 and the issue still persists. http://lists.osgeo.org/pipermail/qgis-user/2011-December/014732.html
[georef] Fix coordinates truncated to 2 decimal places in table
Now, coordinates are shown in table to 4 decimal places, and a
tooltip will show the full precision of coordinates. Editing
coordinates also shows the full precision. (fix #10480)
- Category changed from C++ Plugins to C++ plugins/Georeferencer
Still happens in 2.6. I would say it is pretty high issue. For system in meters, precision to millimeters are sure fine for majority. But when using WGS 84 or any degrees, this is significant error and gives the user wrong result without any warning.
- Affected QGIS version changed from 2.2.0 to 2.6.0
Sorry, I did few more tests and this issue doesn't affect precision as far as the values cropped to two decimals were not updated/re-saved. Internally it keeps original values, including saving to GCP - points - file).
- Status changed from Open to Closed
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