# Tagged Questions

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

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### How do I plot coordinates (latitude and longitude pairs) on a geographic map?

I'm attempting for the first time to create a map within Mathematica. In particular, I would like to take an output of points and plot them according to their lat/long values over a geographic map. I ...
1k views

### Peirce's quincuncial projection

The Peirce quincuncial projection is the cartographic projection of a sphere onto a square. In short, I would like to see it implemented in Mathematica. Here is my code: ...
956 views

### How accurate is GeoDistance?

Two years ago I tried an evaluation copy of Mathematica. I reported various inaccuracies in the GeoDistance routine to which I never received any fix. Could ...
358 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 ...
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### 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 ...
1k views

### How can I list all the 'countries 4000 km far from current location'?

A friend said to me on Facebook that she is 4000km away. So I want to try to guess where she is. How can I find which countries are a given distance from my current location?
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### How do I map a Mollweide projection onto a sphere?

I have this Mollweide projection of the Earth circa 600 million years ago (http://jan.ucc.nau.edu/~rcb7/370moll.jpg).(1) I want to map this onto a sphere. My results have big black splotches in ...
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### 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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### 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?
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### 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 ...
343 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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### 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 ...
1k views

### plotting a {{Latitude,Longitude}} list on top of a GIS shapefile

I have a dataset composed of points specified in {Latitude,Longitude} format. Call it latlong for the purposes of this question. It displays properly with ...
153 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") ...
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### How can you use and convert Gauss-Krüger-Coordinates in Mathematica?

I am given geographic data in the form of Gauss-Krüger-Coordinates and would like to calculate distances with them and convert them to longitude/latitude coordinates in another system for plotting (e....
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### 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 ...
1k views

### How to convert from and to UTM coordinates in Mathematica?

How to use the UTM coordinate system (northing, easting) in Mathematica using the built-in functions (GeoPositionENU, ...
250 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 ...
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### 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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### 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 ...
196 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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### 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. ...
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### 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? ...
478 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 ...
51 views

### GeoRegionValuePlot not using ColorFunction colours

I have a custom Blend for use with GeoRegionValuePlot's ColorFunction option. ...
109 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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### 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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### 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 ...
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### How to get the correct latitude and longitude coordinates using FindGeoLocation on street addresses [closed]

Have a list of street addresses: ...
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### 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 ...
217 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: ...
365 views

### {Latitude, Longitude} to Transverse Mercator projection

I have a shapefile with the following "CoordinateSystemInformation": ...
117 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 ...
102 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. ...
240 views

### Correct usage of GeoPosition

My goal is to trace a ray down to the ground. I have done: ...
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### How to calculate the distance between UTM-projected coordinates?

My coordinates are projected using the following projection: proj= {"UTMZone32", {"GridOrigin" -> {500000, 0}, "CentralScaleFactor" -> 0.9996}}; Now I wish ...
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### 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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### 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 ...
88 views

### Geodesy without units?

Suppose I'm interested in the latitude of Los Angeles and I do the following: ...