16 reputation
4
bio website biodata.io
location Perth, Australia
age 31
visits member for 2 years, 4 months
seen Sep 25 at 7:26

Botanist and plant biologist with interests in data management and spatial analysis. Learning Django and Python while developing Biodata, a data management application for biologists and environmental scientists in Australia.


Jul
3
comment Can't get SRS from PostGIS using Proj4 text
Thanks Paul. I came up with this solution too, although the EPSG numbers for the datums I'm interested in use a 283ZZ pattern. I'd still like to know why the PostGIS lookups are failing.
Aug
15
comment Vectors created in OTB Monteverdi are displaced
Hi Nick, yes it is very odd - I just did what you suggested, which worked although the layers are now about 1m apart (datum difference?). I can move the vector manually, but I would prefer to discover the source of the problem so that I don't have to adjust it every time (and also so I can understand it!)
Aug
15
comment Vectors created in OTB Monteverdi are displaced
Re: difference in CRS, thanks for pointing that out, but GDA94 is almost interchangeable with WGS84 - I think there is a maximum difference of a few meters. Reprojecting it doesn't make any difference.
Aug
15
comment Vectors created in OTB Monteverdi are displaced
Cool, thanks - comments definitely welcome. As I understand, Monteverdi is a self contained application - obviously it contains all the OTB libraries, but they are not available to other software. And Monteverdi is the only way to run OTB natively on a Mac.
Aug
15
comment Vectors created in OTB Monteverdi are displaced
Thanks for that - I have just discovered SEXTANTE and I'm learning how to use the GRASS tools - however, it still doesn't answer my question of why the shapefiles produced in Monteverdi are projecting 75km out of place. Regarding running OTB tools through SEXTANTE, I think this still requires the OTB applications to be installed on the system, which is not possible in OS X (once again, happy to be corrected though).