# Questions tagged [haversine]

The tag has no usage guidance.

29 questions
Filter by
Sorted by
Tagged with
78 views

### Calculating coordinates of two GPS points whose line through them is perpendicular to two other GPS points

Given two GPS points A and B, I would like to compute the GPS coordinates A1 and A2. [A1A2] forms a segment perpendicular to segment [AB]. For this, I start to compute M1, which is the midpoint ...
63 views

### Haversine accuracy worse when using geocentric radius vs average Earth radius

I am required to calculate the distance between two points. To reduce computational complexity for an embedded system, rather than use the more accurate Vincenty that uses the WSG84 ellipsoid, I have ...
49 views

### Diagonal distance of two aircraft

I want to calculate the diagonal distance of two moving aircraft to estimate relative velocity. Since the altitude and GPS position(longitude, latitude in decimal degrees WGS-84) of those two are ...
243 views

### Offset Latitude and Longitude by some meters accurately - Reverse Haversine

I have a set of lat/long coordinates and need to offset the value to the "left" by < 10 meters. I calculate left by getting the direction my instrument is facing and use basic ...
755 views

### Generate a circle of coordinates around a point, but I'm getting an Oval

I'm using the following code to attempt to generate a circle of coordinates a fixed distance (in this case 1km) around a point. I'm basing the formula on Haversine, but the output I'm seeing in Google ...
1 vote
116 views

### Drawing circle of a fixed radius in meter, rounding error?

I would like to provide an option to draw a circle of a fixed radius in meters. My problem is that if I enter 5 meters, I'm getting 4.99 meters if pass the LineString to sphere.getLength. My code so ...
45 views

### Haversine formula on rotated poles sphere

I'm working with climate data from the CORDEX domain WAS-22. The data are on rotated poles grid defined as: char rotated_pole; :long_name = "coordinates of the rotated North Pole"; :...
1 vote
54 views

### Haversine distance versus Euclidean on an eqc "equi-distance" projection

I've got a network covering a large area, but the individual links are fairly small (<1km). For calculating edge lengths I'm trying to decide whether it would be better to use Haversine distance ...
327 views

### Haversine based distance transform

I have a binary image with pixel resolution in units of degrees (EPSG:4326): In this case, all the light-blue pixels are water (value = 1) and purple pixels are not water (value = 0). I would like to ...
1 vote
127 views

### About distance between two coordinates streets?

Let's suppose there are two places coordinates (street places). I know that straight direction between them I can calculate by formula. Also we know that route between those coordinates can be ...
1 vote
126 views

### Distance difference between Pyproj and Haversine

I'm measuring the distance between two points with two different methods. This results in two very different results. Please have a look: from pyproj import Transformer from haversine import haversine,...
1 vote
294 views

### Calculating distances with PROJ4J

I am already using proj4j in my project to convert between different coordinate reference systems. (Internally I use WGS84 but some sources supply data in a different CRS.) Now I need to calculate ...
1 vote
485 views

### Calculate distance between consecutive GPS points for each id

I'm working with ArcMap 10.6. I have a big dataset of GPS points (so my coordinates are in latitude and longitude) with around 800 user ids. I want to calculate the distance between each GPS point, ...
440 views

### Would nearest point using Geodesic distance and nearest point using Haversine distance be the same point?

I have a point A and trying to find the nearest point to A in a list of points (B, C, D). I could use knn with haversine metrics and get the nearest point like this: knn = NearestNeighbors(...
1 vote
858 views

### When calcuating distance between points on Earth why are my Haversine vs. Geodesic calculations wildy diverging?

I am getting wildly diverging distances using two approximations to calculate distance between points on Earth's surface. I am using the Haversine (vectorized) approximation (spherical earth) and the ...
1k views

### Difference between haversine formula & geodesic distance for calculating distance

Background I have Vehicle driving data which includes Lat/Long points of a particular route. I drive in that route for 2 times. The driving data in that route is around 20 minutes. (Approximately ...
164 views

### Calculating haversine versus checking latitude and longitude digits after decimal point?

If I want to tell whether 2 points are close to each other, say at proximity of 50 meters, is it OK to compare both numbers up to a certain decimal point, for example the two points: 36.391155, -56....
2k views

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

I have reviewed Why is law of cosines more preferable than haversine when calculating distance between two latitude-longitude points? and that does not equate to the specific question that I wish to ...
979 views

### st_distance returns different answer than haversine formula

I have two coordinates stored as geometry in a table. They are stored in column named latlng. Now the coordinates are: 1 31.54696470032501, 74.3782182429078 2 31.548894670525055, 74.37833017871426 ...
392 views

### Calculating relative position between geocoordinates and distances

I am working on a Unity application and am using the Haversine formula to calculate the distance between two points. I know the overall distance + the distance along the latitude and longitude are ...
289 views

### Retrieving Lat and Long positions for pixels in a neighborhood in Google Earth Engine

I need to calculate distances between two different pairs of pixels in a neighborhood. There are two solutions. The first is to reproject the image to a plane squared grid (Albers Equal Area or UTM, ...
302 views

### Why is the length of one degree in Turf 0.9988?

Calculating the (spherical) distance along one degree of longitude at the equator in Turf returns a number less than 1 (Try it): require('@turf/turf').distance([0,0], [1, 0], { units: 'degrees' }) 0....
203 views

### Compute difference in lon / lat when moving at angle

I have the following problem: I have been given an origin as a lon / lat pair, a distance in kilometers and an angle on the ground, relative to the cardinal directions. My goal is to compute the ...
1k views

### Calculate velocity x and y components from Lat,Lon and Time

I'm trying to calculate velocity components in the X and Y direction given two points: P0 = (Lat0,Lon0,Time0) and P1 = (Lat1,Lon1,Time1) The points are pretty close together so the components ...
1k views

### How to Specify Haversine when using Buffer Method in Shapely and how to get Haversine distance between two Shapely Point objects?

I have a series of latitude/longitude pairs and I form Point() objects for each pair. I would like to form buffer regions around each point using a Haversine distance argument instead of Euclidean ...
1 vote
2k views

### Vincenty's formulae to calculate in MySQL and PHP

I was reading Haversine formula on wikipedia and at the end of article its state that "More accurate methods that consider the Earth's ellipticity are given by Vincenty's formula and the other ...
16k views

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

Many people when first trying to calculate distances between two longitude / latitude pairs ask if Pythagorean theorem works as an appropriate distance function. Most often people answer "no, the ...