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cffk's user avatar
cffk's user avatar
cffk
  • Member for 12 years, 11 months
  • Last seen more than a week ago
25 votes

How accurate is approximating Earth as sphere?

18 votes

Difference between Vincenty and great-circle distance calculations?

11 votes

What tools in Python are available for doing great circle distance + line creation?

10 votes

What Python package to use to calculate midpoint?

8 votes

Calculating intersection of two Circles

8 votes

What is approximate error of Pythagorean Theorem vs. Haversine Formula in measuring distances on sphere at various scales?

7 votes

Why is law of cosines more preferable than haversine when calculating distance between two latitude-longitude points?

7 votes

Which is the most accurate method of measuring distance?

7 votes

Difference between Vincenty and great-circle distance calculations?

6 votes

How to compute latitude and longitude of a point at a distance from another point in some direction?

6 votes
Accepted

Latitude above and below the surface of the Earth

5 votes
Accepted

testing if a Geodesic polygon contains a point c++

5 votes
Accepted

cross track distance to great cicle line and rhumb line

5 votes

Calculating midpoint from series of latitude and longitude coordinates

5 votes

Calculating a spherical polygon centroid

4 votes

What kinds of line segments/edges require high accuracy in a true surface-of-the-ellipsoid representation?

4 votes
Accepted

WGS point to WGS line segment (great circle) distance

4 votes

Calculating areal distortion outside UTM zone?

4 votes

Are British National Grid (BNG) 1km grid shapefiles displayed accurately in ArcMap?

4 votes

Convert UTM northing and longitude to latitude

4 votes
Accepted

Variation of algorithms to find point from another point with bearing and distance

4 votes

ArcGIS Length and Area Calculation Scenarios

4 votes
Accepted

Direct Geodesic with Point 2 Azimuth

4 votes

Obtaining same area values provided by Census for TIGER boundaries using PostGIS functions?

4 votes

Get a LonLat point by distance or between 2 lonlat points

4 votes

Definition of "most northwesterly point" on a landmass?

3 votes

Difference in destination location between pyproj and geopy

3 votes

Obtaining same area values provided by Census for TIGER boundaries using PostGIS functions?

3 votes

How to get the height according to EGM96 for a point?

3 votes
Accepted

How do I figure out the grid references (Eastings and Northings) necessary to create a circular 1 mile radius around one location?