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Geographic Information Systems
Ralph Tee's user avatar
Ralph Tee's user avatar
Ralph Tee's user avatar
Ralph Tee
  • Member for 7 years, 11 months
  • Last seen more than a month ago
  • Kuala Lumpur, Malaysia
Profile Activity

49 Answers

Score Activity Newest
13 votes
Accepted

Spherical Mercator - World bounds

12 votes
Accepted

Understanding raster symbology settings

9 votes
Accepted

Storing GPS location in postgis efficiently?

6 votes
Accepted

Calculation between Raw GPS data to latitude,longitude points?

6 votes

What kind of margin of error can I expect in figuring distance?

5 votes
Accepted

Using ogr2ogr to convert multiple GML files to a postgis table

5 votes
Accepted

Reasoning behind GPS time week number?

5 votes
Accepted

proj: Oblique Mercator specifying two points on central line

4 votes

Writing GDAL/OGR point shapefiles over 4GB size?

4 votes
Accepted

proj4's omerc projection (cs2cs) broken?

4 votes

Heuristic relationship between number of satellites and GPS precision?

4 votes
Accepted

How does oversampling work in WMTS layers?

4 votes
Accepted

Difference between EPSG:4236 and EPSG:4326?

3 votes
Accepted

Precise st_area() of small polygon need geography

3 votes
Accepted

Hammer projection in GDAL

3 votes

Differential GPS without RTCM

2 votes

Create custom coordinate system

2 votes

Turning degrees into square kilometres (km2)?

2 votes
Accepted

Trouble using XYZ Tiles in QGIS 3 on Mac

2 votes
Accepted

QGIS coordinate precision

2 votes
Accepted

Units for LLA to ECEF conversion

2 votes

Aerial Triangulation by using GPS height

2 votes

What is the type of EPSG of longitude/latitude (not Point) co-ordinates?

2 votes
Accepted

Returning Geometry - ArcGIS REST service

1 vote

Vector data displaying incorrectly

1 vote

Inaccurate Transformations - OSGB 1936 / British National Grid to WGS84 with Proj.Net

1 vote

Add an ESRI projected coordinate system to PostGIS

1 vote

GDAL C# Error: "Failed to import coordinate system"

1 vote

PostGIS group by overlapping geometries

1 vote

Getting elevation readings at any lat,lon from shapefile with scattered irregular points

1
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