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visits member for 2 years, 11 months
seen Jan 26 '12 at 16:13

Jan
24
awarded  Scholar
Jan
24
accepted Plotting a circle on a Web map to view the resulting coverage over a central location
Jan
24
asked Plotting a circle on a Web map to view the resulting coverage over a central location
Jan
16
awarded  Supporter
Jan
16
comment Is city-supplied GIS data sufficient for transit operators or do they need their own set of GIS data?
@ undedark : I agree with you, I briefly worked in the GPS field in 2001 and understand all the inherent location errors, though there are some ways to correct those errors. But that's why I'm curious to know if transit operators go through the trouble of creating a precise GIS dataset, or at least one more precise then what is readily available from cities and such authorities. ETA is the first calculation that came to mind, but I'm sure there are other elements that could be adversely affected by a large delta.
Jan
13
revised Is city-supplied GIS data sufficient for transit operators or do they need their own set of GIS data?
Added a more detailed explanation that was too long to fit as a comment to the supplement to Brad Nesom's answer.
Jan
13
awarded  Editor
Jan
13
revised Is city-supplied GIS data sufficient for transit operators or do they need their own set of GIS data?
Added a more detailed explanation that was too long to fit as a comment to the answers of Jason Baker and dassouki.
Jan
12
awarded  Student
Jan
12
asked Is city-supplied GIS data sufficient for transit operators or do they need their own set of GIS data?