Questions on the application of Mathematica to geography, including the use of the CountryData and CityData functions. Not to be confused with geodesy.

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2
votes
2answers
230 views

GeoGraphics examples not running correctly

I'm trying to work with the new GeoGraphics functionality in Mathematica 10, starting with the example given here. None of the code seems to run well for me, though. I try to run the first command: <...
3
votes
1answer
70 views
2
votes
1answer
118 views

Cannot combine GeoPosition polygons in version 10.4

I was using with Mathematica 10 for plotting different kinds of maps the function PolygonCombine. It seems that this fucntion has disappeared with the version 10.4? Here is a classical example for the ...
3
votes
0answers
33 views
4
votes
1answer
46 views

Anomalous scaling in GeoRegionValuePlot when using non-default color scheme

I found this plot online, and thought "I bet I could do that with a one-liner using GeoRegionValuePlot". But then it turns out that you are much better off ...
13
votes
1answer
148 views

Rotate Geographic map

I want the map to be rotated by -45 Degree. I want to coast to be horizontal (perfect -45 degree). I already have: ...
26
votes
4answers
4k views
2
votes
0answers
51 views

Help with GeoRegionValuePlot

I am trying to get a map with 4 colors, I have several regions with values from 0 to 3 and I want to color those regions with value 0 in white, with value 1 in yellow, with value 2 in orange and with ...
1
vote
0answers
27 views

Remove surface from graphic [duplicate]

How to remove surface from the following graphic? I need only Mesh, (black lines). ...
13
votes
2answers
130 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
votes
1answer
38 views
2
votes
1answer
80 views

Given Latitude, Longitude, and Elevation, how to illustrate a three-dimensional path?

I've extracted detailed path information from a .FIT file and would like to plot this in three dimensions. I assumed GeoPositionXYZ[] would be useful, and have translated the data into a list that ...
3
votes
0answers
37 views

GeoRegionValuePlot does not show Legends

I have a problem with GeoRegionValuePlot. These are the settings: ...
4
votes
3answers
231 views

Plots of United States states with non-standard labels

I have data that associates a state with some text (like the name of its biggest insurance company). The states are identified as Wolfram Language entities, e.g. Entity["AdministrativeDivision", {"...
9
votes
1answer
206 views

Odd Coloring with GeoRegionValuePlot

Bug introduced in 10.0 and persisting through 10.3 or later Bug behavior is version dependent When I'm plotting data with GeoRegionValuePlot, I'm getting some ...
1
vote
2answers
146 views

Make a list of large cities in Germany

I want to Make a list of large cities in Germany CityData[{Large, "Germany"}] but in Documentation Center answer is in short form How to get the answer ...
22
votes
3answers
1k views

How to make a 3D topographic globe?

I've made some attempt with this dataset of elevation. But I have some trouble with ListSurfacePlot3D, which can not show the globe correctly: And I've checked that the data is out of problem, ...
8
votes
1answer
136 views
3
votes
3answers
327 views

Median household income for each county in Maryland

I found that Wolfram|Alpha knows the median household income for every county in the US. I wanted to get a list of all counties in Maryland, and the median income in each county. The only way I could ...
16
votes
1answer
369 views

GeoGraphics: problem with GeoPosition in shifted projections

Bug introduced in 10.0.0 and persisting through 10.4.1 A remark about the answer: My work around is only nice for simple cases with points. More general should include proper polygons splitting on ...
5
votes
1answer
297 views

GeoGraphics - mapping the Moon

The link here shows a nice way to depict the map of the Moon in Mathematica. But is there a way, to center the Mollweide projection onto the far side of the Moon?
10
votes
5answers
740 views

Building graph based on the cities connection?

I built a Graph based on the permutations of city's connections from : ...
4
votes
1answer
100 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 ...
1
vote
1answer
254 views

Winkel Tripel and Robinson Projections?

How can I do WorldPlot with the WorldProjection -> Winkel Tripel or Robinson projections. Mathematica has Mollweide and several others defined, but not these popular projections adapted by National ...
10
votes
1answer
140 views

Why some GeoProjections show just half of Chukotka region (Russian map)

I've moved to V.10.4 and proceed with Russian map (the aim is to geoplot regional distributions of some values). Notice most eastern Russian region - Chukotka. Chukotka, unlike other entities, ...
3
votes
0answers
92 views

Georeferenced bitmaps

The command Export["filename.jpg", graphic] will export the graphic object graphic to the file ...
5
votes
1answer
39 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: ...
19
votes
1answer
324 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 ...
2
votes
0answers
83 views

Using SHP files to draw a density map [closed]

My SHP file of census block groups has polygons and associated employment data for each block group. Is there a simple way to draw an employment density map? I've played around with ...
6
votes
0answers
258 views

CountryData fails for some tags and properties

The problem has gone, presumably resolved by WRI. See kirma's comment. I'm using Mathematica 10.0.2 for Mac, and for the first time just tried CountryData. ...
15
votes
1answer
325 views

GeoGraphics : path within a country

I am using GeoGraphics to visualize electricity distribution networks in certain countries. I have susbtation location data, as well as network incidence matrices (...
14
votes
1answer
362 views

How do I remove roads from Mathematica maps?

I'm using GeoGraphics and Polygon[Interpreter["USState"]["Colorado"]] to create a map of Colorado and several bordering states. ...
1
vote
1answer
81 views

How can I add flags to countries shapes? [duplicate]

Recently, I wanted to create a map showing the flags of the countries. From the documentation, I found and used the following: ...
6
votes
0answers
82 views

How can I define geographic regions and new entities?

There are three functions (GeoListPlot, GeoGraphics and Entity) related to working with geographic regions but it is not clear from the documentation how to create new Entities or custom geographic ...
13
votes
1answer
455 views

How does Mathematica know my location?

On the AstronomicalData page in the online reference, it says for AstronomicalData["Sun", "NextRiseTime"] that it finds the ...
12
votes
2answers
340 views

Zooming using GeoGraphics

Suppose I do: GeoGraphics[Entity["City", {"Eureka", "California", "UnitedStates"}]] What do folks do at this point to zoom in to various parts of the image?
4
votes
0answers
75 views

Planning flights for a special route

I want to plan a world trip with Mathematica. So I already have the dataset with all the cities I want to visit and the tour (with the command FindShortestTour). So ...
8
votes
1answer
139 views

RandomPoint in geographic region from Polygon[region_]?

How do you generate a RandomPoint in a geographic region? ...
10
votes
3answers
745 views

Automatically adjust Russia on the map (Mathematica 10.0)

Bug introduced in 10.0.0 and fixed in 10.1 I'm using Mathematica 10.0 on Windows 10. If I take a map of any country (even continent), it automatically adjusts the size of the map. ...
5
votes
1answer
98 views

Add single contour line to relief map [duplicate]

I have generated a relief map according to a method shown in Mathematica documentation, viz: ...
5
votes
3answers
422 views

Drawing CountryData groups

I'm sure I'm overlooking something obvious, but I can't draw groups of countries. Here are two countries and two country groups: ...
14
votes
4answers
261 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 ...
17
votes
4answers
2k views

show density plot on US map

I have a bunch of data points in the form of {latitude, longitude}. How can I plot their density on a US map? Single points on the map do not clearly show their ...
6
votes
1answer
422 views

Geographics: Can I get a US Map silhouette without the Great Lakes?

I'd like to get a nice silhouette of the land area of the US lower 48 states using Mathematica's GeoGraphics method. I tried: ...
6
votes
1answer
63 views
0
votes
1answer
214 views

Problem with ListContourPlot feeding data format and WeatherData

With following code I am trying to show the mean wind speed patterns for a few geographic locations. ...
8
votes
3answers
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 ...
1
vote
1answer
64 views

Combine ReliefPlot with other geographic shapes, like administrative boundaries

How can I combine a ReliefPlot with other geographic shapes? Since the ReliefPlot is just a plain array of values, it is not clear to me how to project it and combine it with other geographic shapes, ...
5
votes
1answer
135 views

Wolfram population density demonstration does not appear to work

I tried to do the Wolfram population density demonstration and it returned an error: ...
1
vote
1answer
83 views

Is there a hidden location-type property for TropicalStormData?

TropicalStormData gives you time-series data on tropical storms. In the property list there is not a location (geographic coordinates) property listed. There are ...