36 reputation
4
bio website stackoverflow.com/users/edit/…
location Greece
age 41
visits member for 2 years, 9 months
seen Apr 19 '12 at 14:51

Me


Apr
19
awarded  Editor
Apr
19
revised PostGIS 2.0 and Postgres 9.1: ST_Transform => failed to load NAD27-83 correction file (Windowsx 64)
added 923 characters in body
Apr
19
comment PostGIS 2.0 and Postgres 9.1: ST_Transform => failed to load NAD27-83 correction file (Windowsx 64)
Sorry no luck. Set the system variable... still no luck. Interestingly from 4326 to 3785 works. The other way around it fails.
Apr
10
asked PostGIS 2.0 and Postgres 9.1: ST_Transform => failed to load NAD27-83 correction file (Windowsx 64)
Feb
3
comment Calculating radius / buffer on EPSG 3785 in meters vs buffer in WGS 84 in meters
In essence the ratio of failure on Merc versus Real-World shouldn't be this high.
Feb
3
awarded  Supporter
Feb
3
comment Calculating radius / buffer on EPSG 3785 in meters vs buffer in WGS 84 in meters
Thank you for that, however I must ask. If Merc projection uses meters for defining positions on the globe, why it not define distance? I am obviously missing something here. I understand quite well the effect of latitude growth/shrink and earth radius, but taking that away on a project based on meters, a distance in meters "should" be represented correctly and match the distance between two points (on the project - not necessarily in real-world)
Dec
22
comment Calculating radius / buffer on EPSG 3785 in meters vs buffer in WGS 84 in meters
underdark - +1 for a good reference. I think the answer from mkadunc attempts to answer it although I am still not convinced that is the reason.
Dec
22
awarded  Student
Dec
22
awarded  Autobiographer
Dec
22
comment Calculating radius / buffer on EPSG 3785 in meters vs buffer in WGS 84 in meters
skeryl - I don't see how curvature can affect the radius at this scale. The error factor at this scale is very low to throw it so far off.
Nov
22
asked Calculating radius / buffer on EPSG 3785 in meters vs buffer in WGS 84 in meters