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For questions about the geodetic functionality of Mathematica, including the functions FromDMS, GeoPosition, GeoDistance, GeodesyData, and FindGeoLocation.

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Historical Weather Data for every Country in the World

I am trying to create a list of the average global temperatures per-year for the last 18 years using the WeatherData function. You can input a set coordinates ...
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0answers
51 views

GeoDistance gives the same distances over a Table of different locations

I am generating a table of: From latitude, longitude pairs. To latitude, longitude pairs. GeoDistance between the from and to locations. The code I am using is below: ...
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1answer
89 views

GeoArea of an Intersection

I am looking to calculate the geographic area of an intersection of a GeoDisk with a geographic entity such as a county. I was hoping for a simple construct like: ...
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1answer
54 views

Which Question about plotting a location on a map.

I am plotting the wind speed vectors of hurricane Harvey on a graph and I want to add a dot located at coordinates of Dallas. ...
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1answer
64 views

Hurricane Graphics: Help with Coloring a Graph

So currently I have a graph of latitude, longitude, and Max Rainfall generated from the code below. ...
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1answer
58 views

Trying to plot points of rainfall during Harvey on a map of Texas and color code points

I am trying to plot lat, lon, and maximum rainfall of hurricane Harvey on a Map of texas. I have gathered all the data inside Mathematica using station names and the WeatherData function. This is the ...
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76 views

DynamicGeoGraphics misplaces dynamic Points

Bug introduced in 10.4 and persisting through 11.2 CASE:3971576 I need to highlight a selected point in a DynamicGeoGraphics. I use a ...
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2answers
531 views

How to obtain the distance (in Km/Miles and in minutes) by road ?. for example using googlemaps

How to obtain the distance between 2 geographical points (knowing the latitute and longitude) One easy way in the web is https://www.google.es/maps/dir/42.6897189,-8.4912382/42.\ 8659508,-8.6709907/@...
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1answer
114 views

Orthogonal Geodesics to Solar Eclipse Geopath

I'm trying to find the perpendicular geodesics to the path the upcoming solar eclipse will take: Path: ...
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1answer
111 views

use of GeoDistance on WGS84 spheroid

The reference WGS84 describes the Earth as oblate spheroid with semi-minor axis (radius to poles) of 6356.752 km and semi-major axis (radius to equator) of 6378.137 km. I am considering the distance ...
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1answer
78 views

Find the GeoArea of overlapping GeoDisks

Given a set of GeoDisks, how can one determine the combined region area, presumably through GeoArea? ...
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1answer
183 views

How to calculate the maximal GeoDistance and TravelDistance in a geo-region

This is current method to find the maximal EuclideanDistance in American ...
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0answers
108 views

GeoHistogram does not plot all data when points are spaced out

GeoHistogram appears to be leaving out some of the data given to it. A minimal example follows. ...
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1answer
220 views

How to speed up geographic entity lookup (reverse geocoding?)?

I have a very large set of coordinates (40,000+) that I need to categorise in a hierarchy of geographic entities; region, country, administrative divisions, city. I only have the coordinates and no ...
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1answer
102 views

How can I show the relative size of two GeoGraphics objects?

I've created a GeoGraphics object from data I collected on a recent trip across part of Michigan, like so: I'd really like to overlay another country to scale in the center of this image to give a ...
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3answers
464 views

GeoPosition coordinates from Shape file (.SHP) with unknown Datum

The City of Amsterdam supports an Open Data policy. Much information can be retrieved at the level of boroughs (stadsdelen). Unfortunately, GeoGraphics does not ...
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0answers
202 views

GeoGraphics with GeoServer option to fetch Google Maps in Mathematica 11

The GeoServer option in Mathematica 11 can be used to get a Google-Maps satellite background in GeoGraphics; a very useful feature. E.g. ...
4
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1answer
103 views

GeoPath to list of coordinates

I'm trying to interpolate a GeoPath to an n-size list of GeoPositions. There doesn't seem to be any documentation on this seemingly common operation anywhere. Is this even possible?
2
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1answer
187 views

Calculate Distance between UTM coordinates?

I know this question looks like a duplicate of this, but in that post, the answer does not give the right answer. So.... Given two UTM coordinates, how would I go about finding the distance between ...
14
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2answers
2k views

How can I generate an interrupted projection of a world map?

How can I generate a world map like the one here, but for an arbitrary hand-drawn map? For example, starting from scratch, how can I manipulate this world map to get something that looks like ...
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2answers
138 views

GeoRegionValuePlot not using ColorFunction colours

I have a custom Blend for use with GeoRegionValuePlot's ColorFunction option. ...
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0answers
88 views

How to specify image quality for GeoStyling “GeoImage” in GeoGraphics?

I am creating plots (ContourPlot, SmoothDensityHistogram, etc.) that I then need to project onto geographic polygons. When this ...
2
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1answer
249 views

How to align GeoGraphics “GeoImage” with GeoPositions?

I have latitude and longitude locations that I need density (or contour) plot to overlay on a map. For example: ...
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0answers
77 views

Is there a Function like Here or FindGeoLocation[] that pulls GPS from an Android device for Wolfram Cloud deployments?

Neither FindGeoLocation[] nor Here really work when deploying to the cloud for a mobile or browser app. ...
15
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2answers
267 views

Why does the GeoGraphics Frame show different Latitude than GeoPosition?

The map looks right, but the Latitude in the Frame looks wrong. Am I making a mistake or is this a bug?
4
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1answer
288 views

Creating a latitude longitude image

The GeoPosition of Eureka, California is: GeoPosition[{40.7933, -124.155}] Has anyone ever created an image of the world with ...
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1answer
241 views

Wrong bearing between two GeoPositions compared to Google Earth

I'm trying to calculate a bearing (degrees, distance) between two points, a and b. From Google Earth I have two points and the ...
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1answer
90 views

How to control style of GeoScaleBar?

I'm plotting the GeoScaleBar over satellite image and wish it to be white but cannot find an option which controls its styling: ...
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0answers
205 views

Convert large KML coordinate datasets to UTM [closed]

I was wondering if there are ways to convert massive amounts of KML coordinates into UTM coordinates using Mathematica. Other programs would also be acceptable. Thanks. I have the KML file from ...
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0answers
113 views

Plot Multibeam bathymetry grid

I don't speak Mathematica very well, but I am sure I could do great things with this programming language! I will delete this question if it is a duplicate, but I will be glad if you could point me ...
12
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2answers
498 views

How to make geometric intersection faster for geographic borders?

I have developed a solution to identify geographic regions bordering a region in this post (94723). Can this functionality be made to execute any faster? Find which entities in a set border other ...
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4answers
420 views

Administrative Divisions bordering a geographic region (e.g. an ocean)

Update 3 I've worked out a solution that is bearable for a small number of subregions in the neighbour and added it as an answer. I'm going to make a post for optimisation help. Update 2 For a ...
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1answer
265 views

Does GeoGraphics support Elliptical Mercator projection?

When working on the answer to this question I found that GeoGraphics seemingly uses by default the Spherical Mercator projection (also known as "Web Mercator") ...
23
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1answer
573 views

Can Mathematica Export Shapefiles?

Mathematica is great at importing ESRI shapefiles (.shp). Import["http://exampledata.wolfram.com/usamap.zip", "Graphics"] But it seems like it's a glaring ...
21
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1answer
1k views

How to use WikiMapia as GeoServer?

I wish to use the Wikimapia map as background in GeoGraphics. According to the Wikimapia Docs, Wikimapia's URL is encoded as follows: An example Wikimapia URL is ...
14
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1answer
589 views

GeoProjection for astronomical data - wrong ticks

Here is an excellent answer to what I wanted to do, and it works like a charm. Unfortunately, when I want to change it a bit, it fails. For setting the stage, here is the datafile, and this is my ...
6
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1answer
46 views

Behavior of $GeoLocationCity within a Block

According to the V10 documentation on $GeoLocation, \$GeoLocationCity gives the city entity for the current setting for \$GeoLocation And since this is ...
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2answers
426 views

Matrix of boundary distance between countries

I'm trying to generate a matrix of the boundary distances between all countries. First thing I tried was GeoDistance: ...
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1answer
75 views

Documentation on GeoGridPosition

Wondering where I can find more documentation on GeoGridPosition. Specifically, what formulas does Mathematica use to transform lat/long points to x/y coordinates? ...
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1answer
81 views

How do I plot lat/long points in the Atlantic Ocean? [closed]

How do I plot lat/long points on the water? Such as the Atlantic Ocean? Here are some points I'm trying to plot: ...
2
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2answers
196 views

Converting lat/long to x/y coordinates, to generate random variates from a Bivariate Normal Distribution [closed]

I am trying to convert latitude and longitude points to x/y coordinates, generate random variates from a bivariate normal distribution, and then convert those random x/y points back into latitude ...
2
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1answer
87 views

Plotting Vectors in Mathematic at lat/long positions

I have some current data that I want to plot in Mathematica. The first two columns are the latitude and longitude respectively (longitudes are negative b/c it is west of the prime meridian and all ...
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0answers
292 views
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Geodesy without units?

Suppose I'm interested in the latitude of Los Angeles and I do the following: ...
8
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1answer
395 views

Getting the coordinates of GeoDisk[] and similar Mathematica 10 GeoObjects

I'm a big fan of the new Mathematica 10 geographic capabilities and functions such as GeoDisk[], GeoCircle[] and others. One limitation of these functions, however, is the transformation of the actual ...
2
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0answers
181 views

Lat-lon contour plots using geographic projections [closed]

I need to create contour plots of (lat,lon) quantities projected on geographic regions using different projections. Usually considering the entire world or hemispheres. Coastlines need to be present ...
4
votes
1answer
439 views

Convert Locator (x,y) values to Lat/Lon as per GetCoordinates on Map

I want to convert the (x,y) coordinates you get from using a locator on a map to Lat/Lon coordinates - exactly like the GetCoordinates tool does when you right click on a map. ...
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1answer
152 views

Geomarker Scaling

Struggling to get a 3d cylinder to scale properly on a street map. I want to use the stacked cylinder as a custom pin. ...
4
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1answer
858 views

Calculate geo location based on distance from other locations

Given a list of entities (or GeoPositions) and their distances from a particular location, how do I find that location's ...