Harold Chan

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125 reputation

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bio	website	ailin.phychembio.com
	location	Hong Kong
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visits	member for	1 year, 5 months
	seen	2 hours ago
stats	profile views	6

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14 Questions

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4	Can I say WGS84 is more accurate than NAD83 in terms of their reference ellipsoids?
3	Is there any online tool for converting coordinates between different EPSG?
3	What is the relationship between ITRF and WGS84?
2	How can a GPS receiver know the estimated error?
2	In what situations would SpatiaLite be selected over PostGIS, and vice versa?

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125 Reputation

+5	Conversion between WGS84 height and local height datum
+15	Is there any online tool for converting coordinates between different EPSG?
+10	How can a GPS receiver know the estimated error?
+5	Why are the areas covered by 2 Universal Polar Stereographic (UPS) coordinate different?

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1 Answer

votes activity newest

1	Installation problem for pgrouting

18 Tags

1 postgis × 4	0 projection-conversions × 2
1 pgrouting × 2	0 gps
0 coordinate-system × 5	0 openstreetmap
0 cartography × 2	0 google-maps
0 spatialite × 2	0 utm

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	Server Fault	41 rep	4
	Ask Ubuntu	28 rep	3
	Database Administrators	13 rep	2

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