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 have few vector data files with 500 to 700 MB GML files. But I am looking for files larger than these preferably 1 GB, 2 GB. It would be helpful if somebody can provide some pointers regarding the place to find such files.

Note: I need to test polygon overlay over large data sets, so the two layers that I need should be intersecting.

share|improve this question
1  
Would you prefer a specific topic? Generally, you can get big files in any format and convert them to GML using e.g. QGIS. –  underdark Jan 27 '12 at 7:57
add comment

3 Answers

You can try some of the CanVec data, available here. Some of those files range from 4 MB to 50GB, depending on the one you choose.

share|improve this answer
    
ah CanVec... Canada's quiet beast of data! +1 –  SaultDon Jan 27 '12 at 16:06
    
+1 I was just going to say GeoBase...same thing only different –  WolfOdrade Jan 27 '12 at 16:55
add comment

If you don't care what the data is, download the whole of the OSM data (Planet OSM) and use osm2pgsql to get the data into PostGIS and then export to GML.

BUT.. do you really want just any old data (presumably to stress-test you network or something) or is there something particular you need?

share|improve this answer
    
I need to test polygon overlay over large data sets, so the two layers that I need should be intersecting. –  justin waugh Jan 27 '12 at 15:48
add comment

You could try a google search like the following and see what pops up:

gml filetype:zip

http://www.google.com/search?q=gml+filetype%3Azip

share|improve this answer
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.