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17m
comment How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?
On my example, you see that the degree grid is rotated against the UTM background. That's the distortion. And one degree of longitude is smaller (in UTM meters) than one degree latitude (unless you are near the equator). I created the grid using WGS84 without any distortion, then changed the project CRS to UTM to let QGIS do the reprojection on-the-fly.
4h
comment How to find out postgis.backend?
Can you expand the question whether you need a code example for automatic look-up, or where to look up what you have installed manually? And maybe add what OS you are running.
4h
comment How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?
If you know the geographic coordinates, you can easily look up the right UTM zone for that part of the world.
5h
answered How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?
7h
comment What software would be useful to create General Transit Feed Specification (GTFS)?
I guess the service is not for free? Nothing about pricing found on the website at first glance.
7h
comment How are ESRI WKT projections different from OGC WKT projections?
It would help a lot if ESRI and GoeoTiff would always add the EPSG code number to the WKT projection string. QGIS creates an extra .qpj file for shapefiles to save this setting.
7h
comment How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?
@msi_g Then you have not specified the right UTM zone.
7h
comment How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?
Although UTM is a worldwide system, you have to specify which UTM zone you want to use. The UTM coordinates will only be valuable for this zone. You can not reproject a worldwide map to a single UTM zone.
21h
comment How to georeference a map in UTM / WGS 84 (geographic) to WGS84 / UTM?
Apart from the distortion, your resulting image may look weired when you reproject to geographic and back to UTM.
1d
comment Construction of a square grid from a given centre (lat,lon) and direction of the sides
I have used QGIS to create the custom CRS and the vector grid. Both can be made within the GUI. Once you save the result to a shapefile, you can use it anywhere in the GIS world.
1d
answered Construction of a square grid from a given centre (lat,lon) and direction of the sides
1d
revised GCS transformation
added 538 characters in body
1d
comment Why script works on my computer but not on another?
You might have used the plugin installer and got an older version, or it is from QGIS 2.0 before it was moved into core. It might be safe to remove that, and use the core processing exclusively.
1d
comment Why script works on my computer but not on another?
Why did you update the processing plugin? Processing is now a core plugin (ver 2.6), while the one in the repository is experimental, and only version 2.2.0-2. I get a warning that the one installed is newer than the repository offers.
2d
answered How can I merge two lines in 2.6.1-Brighton?
2d
answered Specific renaming of elements in Attribute table failing until closing and reopen attribute table
2d
revised How to read *.adf files into R?
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2d
answered How to read *.adf files into R?
2d
comment QGIS attribute values are changing when I save and stop editing a layer
See also gis.stackexchange.com/questions/90218/…
2d
comment Specific renaming of elements in Attribute table failing until closing and reopen attribute table
Same here, seems like a bug. It only happens if you have sorted the objects by the column you want to change. Other columns behave normal.