Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I'm trying to add an air photo to a project and match it to existing data. CanVec data is mostly based on the old CIA dataset of the 60's and is hopelessly out of date, but the roads are up to date - the roads can easily be seen on the air photo. So, I need to use the roads to line the photo up. This will be an iterative process, of course.

I read of a Georeferencer plugin for QGIS, but can't persuade QGIS to find it (it doesn't seem to have the "3rd party" option shown by online tutorials). Will it do what I need it to? If so, how can I install it?

share|improve this question
add comment

3 Answers

up vote 3 down vote accepted

For Mac, Georeferencer is still missing, see

http://lists.osgeo.org/pipermail/qgis-user/2011-November/014269.html

http://hub.qgis.org/issues/3743

http://hub.qgis.org/issues/4289.

http://osgeo-org.1560.n6.nabble.com/Georeferencer-bug-3743-fix-td4683688.html

You could install Oracle Virtual Box, and set up an Ubuntu operating system with QGIS within that.

share|improve this answer
    
I'll pass on that... Is there anything independent that would let me georeference to a format that QGIS accepts? Besides XY position, Xscale and Yscale, it would have to be able to set reference direction. –  johnsankey Mar 10 '13 at 16:05
    
I have wine installed... –  johnsankey Mar 10 '13 at 16:31
    
QGIS should work on wine. Georeferencer runs fine in the Windows build. –  Andre Joost Mar 10 '13 at 17:30
    
I found the GeoTIFF spec, converted the photo to TIFF and added a .tfw file. After a dozen or so iterations, it's aligned as accurately as the CanVec data is. Wouldn't want to do it very often... –  johnsankey Mar 10 '13 at 23:26
add comment

Georeferencer is available by default. In QGIS 1.8 go Raster-> Georeferencer -> Georeferencer.

share|improve this answer
2  
Sorry, SS_R, there is no Georeferencer listed under raster here: 1.8.0 Lisboa on a Mac –  johnsankey Mar 10 '13 at 14:57
add comment

If you have no Georeferencer listed in 1.8 version, then download the "Master Branch just Prior to New Vector API Merge (most compatible with Python plugins)" in Nightly Mac Build of QGIS from 'master' Branch of Larry Shaffer.

Georeferencer is available by default in Raster-> Georeferencer

share|improve this answer
    
Tried it, but got a heap of Python error messages and nothing is added under raster. I guess it needs new versions of Python & maybe other stuff than I got with the 1.8.0 instal. –  johnsankey Mar 13 '13 at 14:55
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.