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Questions tagged [geodesic-sphere]

44 questions
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Calculating intersection of geodesics on ellipsoid (WGS84, ПЗ-90)

I found the formulas for finding the circle point on the sphere on the site http://www.boeing-727.com/Data/fly%20odds/distance.html, but I can’t figure out how to transfer the calculations to the ellipsoid (for example, wgs84 or ПЗ-90). How big is…
Remerd
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Projection of Geodesic line and a turf polygon onto leaflet

I am using leaflet and turf.js to determine if a line passes through a polygon using turf.booleanIntersects(). I have the code working but with one slight inconsistency. The line in the attached image according to turf.booleanIntersects() passes…
tj26
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Cartopy: Find distance of geodetic/plane carree

I have 4 questions related to cartopy geoetics in various map projections. Here is my code: import matplotlib.pyplot as plt import cartopy.crs as ccrs ax =…
SoySoy4444
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Determining texture co-ordinates across a geodesic sphere

I've generated a geodesic sphere for opengl rendering following a question on here and I'm trying to put texture on it. I came up with the following code by reversing an algorithm for a point on a sphere: //complete circle equation is as…
Figwig
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Matlab: Shape file in vector (X,Y) to raster matrix converter

I am having problem with converting Shape file which is a border of Germany with their X,Y coordinates to raster matrix format of same shape. I simply don't know which method to use for this case. I would be thankful if somebody help me to find the…
Javkhlan Batbayar
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Openstreetmap rectangular grid for whole planet

I`m trying to generate rectangular grid for whole world with fixed cell size in 350 meters (width and height are equals). What i tried to do: 1) in main loop iterate trough longitude in range [-180; 180] 2) in nested loop iterate trough latitude…
gorill
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Draw a multi polygon with metric dimensions over part of a sphere, using d3-geo

I have the following need: given a multi-polygon with metric dimensions, I need to draw it over a specific part of a sphere and then output it in GeoJSON format. additionally, the "part of the sphere" is a rectangle made of 4 points, which could be…
Marinho Brandão
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Want to show custom Geodesic buffer points using local CSV in ArcGIS

I used the Geodesic buffers sample code of ArcGIS from the following link https://developers.arcgis.com/javascript/3/jssamples/ge_geodesic_buffers.html Setup the proxy. it worked fine and showed all the points with features. It was getting the…
user7730840
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How do I update generate a normal map to match an equirectangular projection dilacement map

Im rendering a geodesic sphere of radius 1 in OpenGL and in my glsl tesselation shader multiplying the vertex by a value from a height/ displacement map which creates some large rays protruding from the sphere. I am looking for a way to be able to…
nich
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How to implement a geodesic option for the Scale Bar add-in in OpenLayers 2?

I am using the Scale Bar Add-in from OpenLayers 2 and it doesn't have a geodesic option. I know that the Scale Line has a geodesic option, but considering that the Scale Bar has a wider variety of options, it would be nice to introduce he geodesic…
joaorodr84
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how to create a zone using GPS coordinates

Say I have a GPS coord say A (in longitude-latitude decimal form then I want to create a zone of 30 meters radius (a circle) so that I can trap any device(with GPS coord) which enters that zone, how to do it ? Thanks
user1379094
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output is in NAN Wrong distance not be calculated

Data input: cell_id Lat_Long Lat Long 15327 28.46852_76.99512 28.46852 76.99512 52695 28.46852_76.99512 28.46852 76.99512 52692 28.46852_76.99512 28.46852 76.99512 29907 28.46852_76.99512 28.46852 …
Aditya Kumar Pathak
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Nets of Geodesic spheres

I would realize the papercraft of a geodesic sphere like THIS . Is the dual of the one discussed in THIS OTHER QUESTION . Where can I find the printable nets, or the online resources to create them? In the other discussion I learned that there are 3…
genna
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What is the difference between google maps circle radius [meters] and distances between center and a point on the circumference[meters]

I'm using Google Maps javascript v3. I draw a circle on the map and I permit the user modify the radius. Then, I send coordinates of the center and the radius in km to a server script. I extract all the markers with distance less than the radius…
Fabio
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