Linked Questions
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Distance between two latitudes [duplicate]
I need to know the distance in feet between the coordinates N34-00.000 and N34-00.001 (Degrees, minutes and thousanths of minutes) I computed approx 6 feet but am not confidant in my math skills.
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Getting a "square" of lat/lon for database query [duplicate]
So I want to get the square formed by a single point of lat/lons, my plan was to take that point's latitude, divide by 360, and multiply by the circumference of earth. Giving us the distance from the ...
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What is unit of Shapely length attribute?
I'm doing a very simple calculation of the length of a Polyline using shapely:
from shapely.geometry import LineString
...
xy_list = [map(float, e) for e in xy_intm]
line = LineString(xy_list)
s = '%...
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Algorithm to find nearest point
I have a list of a few hundred cities with their latitude/longitude. Given another location (also in lat/long) I need to find the nearest city.
As I don't use any GIS, by now the obvious algorithm is ...
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How to calculate distances in a point sequence?
I'm looking for help calculating the distance between a sequence of points that are in a single Shapefile in QGIS. Below is what my data look like and a blank distance column I've added to show how I'...
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What is the right solution (and map projection) to compute distances between points located all over the World?
After my study on map projection I realized that it is very difficult to choose a projection that allows to compute simultaneously the distances between a great deal of points if these points are ...
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Which is the most accurate method of measuring distance?
I aim to analyse the accuracy of the various methods of geodesic calculations (distance between two points on Earth)based on the three assumed models of Earth - flat, spherical & ellipsoidal.
I ...
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Approx distance between any 2 longitudes at a given latitude
Given a SINGLE longitude coordinate in decimal degrees, how do I calculate the distance in miles or km between latitude 0 and 1 at that longitude? ie what is the formula?
For example, given 51.43567 ...
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Find tangent point on circle furthest east or west
There are few ways of articulating my question. It starts with a known circle on a sphere, i.e. a point-radius, and one that does not cover a pole. I would like to calculate the point furthest west ...
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3
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Why is this polygon "self intersected" and invalid?
I have a polygon defined as follows:
segment from 43:29:02 N 003:50:39 E to 43:34:12 N 003:43:04 E
arc(CW): center (43:34:49 N 003:58:16 E) from 43:34:12 N 003:43:04 E to 43:45:45 N 003:59:56 E
...
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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 ...
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2
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Generate random location within specified distance of a given point
In a simulation (not using any GIS), I need to generate a random location that is within a specified distance of a given location. I found a very helpful post here on this exact topic: How to ...
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5
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2
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What is a delta in lat/lon called?
What is the delta between two lat/lon pairs called? Delta degrees? Arcs?
Is it some quantity of distance but what is its unit of measurement?
And related: Can we use pythagoras to calculate this ...
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1
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Creating Longitude and Latitude Lines in Google Maps
I'm working on an independent high school project where i'm trying to build a simple differential equation model for diffusion. I'm trying to overlay the model on top of a map to visualize spread, so ...
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JTS - Java Topology Suite - Calculate radius from a given point
From point A, I want to check if a point B is within a certain radius from A.
How calculate it usindo JTS?
I tried this:
Coordinate posicaoAtual = new Coordinate(-12.974900375893823, -38....
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