Questions tagged [vincenty-formulae]
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10
questions
11
votes
2answers
669 views
Why is SQL Server's STDistance Very Slightly Different Than The Vincenty Formula? (Same Up To ~0.0001km)
I'm trying to make a C language equivalent to STDistance. Through research, I've narrowed down what STDistance uses, which apparently is the (inverse) Vincenty Formula. The problem is, I've tried ...
3
votes
0answers
626 views
Calculate velocity and errors from distance between GPS points
I'm using a Kalman filter to track the position of a vehicle and for my measurement, I have a GPX file (WGS84 Format) containing information about the latitude, longitude, elevation and the timestamp ...
4
votes
1answer
8k views
How to measure distance between 2 GPS points in Pandas?
I have two data frames both containing x,y GPS coordinates and I'm trying to determine if they are within a 1/4, 1/2 and 1 mile of each other. Like this:
# COORDS1
DAY LATITUDE ...
6
votes
3answers
754 views
Vincenty or (Project + Euclidean) for accurate distances
I posted a similar question on stackoverflow, however was directed here for more help.
If my main goal was to calculate distances such that my error was minimised to the nearest metre assuming that ...
13
votes
3answers
12k views
Meaning of “Elevation above surface of ellipsoid”?
I'm using implementation of Vincenty's algorithms, and I have their class called "position" that requires lat, lon, and elevation defined by: "Elevation above the surface of the ellipsoid".
What is ...
8
votes
2answers
3k views
Difference in destination location between pyproj and geopy
I am looking at ways to calculate (in Python) the destination location from a point given bearing and range.
Based on the results comparison from the 2 libraries in subject(geopy and pyproj), I ...
2
votes
1answer
206 views
Generating properly-aligned shape from land survey description?
I'm looking through a variety of land surveys from construction permits in Florida, and I'm trying to generate a set of lat/lon points from them, in order to map them out. The surveys list a PLSS ...
2
votes
1answer
742 views
Does PostGIS have a Vincenty Distance calculation?
I have compared some distance calculations between geopy and PostGIS ST_Distance_Sphere, and it seems that PostGIS ST_Distance uses a calculation that is similar to the great circle distance rather ...
3
votes
2answers
2k views
Calculated distance doesn't match Google Earth
I have a google earth route that measures 190.1km in Google Earth.
I then pulled down the .kml file, extracted the points and measured them using Vincenty's formula (ellipsoid earth) and got 190.2.
...
16
votes
5answers
28k views
Difference between Vincenty and great-circle distance calculations?
Python's geopy package features two distance measurements techniques: Great Circle and Vincenty's formulae.
>>> from geopy.distance import great_circle
>>> from geopy.distance ...
