312 reputation
29
bio website vairoj.com
location State College, PA
age 33
visits member for 3 years, 9 months
seen Aug 28 '11 at 3:37

A software developer and master student at Penn State. Love to design and program with happiness.


Oct
14
awarded  Notable Question
Jun
10
awarded  Popular Question
Apr
19
awarded  Nice Question
May
6
awarded  Popular Question
Jan
23
awarded  Yearling
Jul
12
comment Optimize GEOSGeometry's spatial operations by avoiding thread-safety checks
I use PreparedGeometry for spatial predicate methods in my algorithm as well. The performance bottleneck, however, are mainly from topological methods (e.g. intersection, sym_difference), in which PreparedGeometry does not support. The algorithm needs these topological methods to find area of intersection, for instance.
Jul
12
awarded  Editor
Jul
12
revised Optimize GEOSGeometry's spatial operations by avoiding thread-safety checks
fix grammars
Jul
11
asked Optimize GEOSGeometry's spatial operations by avoiding thread-safety checks
Jul
8
accepted Meaning of Simplify's tolerance parameter
Jul
6
comment Meaning of Simplify's tolerance parameter
I see. But what does it exactly means when say the geometry is WGS84 (lat/lon) and set the tolerance to 1.0? Error within 1 degree? Still a bit confused.
Jul
6
asked Meaning of Simplify's tolerance parameter
Mar
24
awarded  Teacher
Mar
22
answered Need a Benchmark GPS Trajectory data-set? Anyone?
Mar
10
accepted Draw route direction overlay on Google Maps or OpenLayers
Mar
10
comment Draw route direction overlay on Google Maps or OpenLayers
And for those who're interested, if you want to render GeoJSON on Google Maps, GeoJSON to Google Maps may come in handy.
Mar
10
comment Draw route direction overlay on Google Maps or OpenLayers
After looking into the code, though Graphserver (particularly its gs_routeserver) produces json output, the output format is not GeoJSON (as it contains richer info regarding directions). However, it can be configured to output coordinates along with its json output. Then, it is straightforward enough to create GeoJSON object from the output.
Mar
10
comment Draw route direction overlay on Google Maps or OpenLayers
I searched through Graphserver source but couldn't find where it outputs geoJson. Could you please point me to that particular function?
Mar
10
asked Draw route direction overlay on Google Maps or OpenLayers
Mar
4
awarded  Scholar