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

learn more… | top users | synonyms

2
votes
1answer
104 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 ...
2
votes
1answer
73 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
34 views

GeoRegionValuePlot does not show Legends

I have a problem with GeoRegionValuePlot. These are the settings: ...
4
votes
1answer
40 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 ...
3
votes
3answers
212 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
203 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
124 views
3
votes
3answers
325 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
363 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
290 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
732 views

Building graph based on the cities connection?

I built a Graph based on the permutations of city's connections from : ...
4
votes
1answer
91 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
246 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
139 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
91 views

Georeferenced bitmaps

The command Export["filename.jpg", graphic] will export the graphic object graphic to the file ...
5
votes
1answer
34 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
303 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
81 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
255 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. ...
14
votes
1answer
313 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
359 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
73 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
74 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
450 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
334 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
71 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
137 views

RandomPoint in geographic region from Polygon[region_]?

How do you generate a RandomPoint in a geographic region? ...
10
votes
3answers
741 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
417 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
252 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
414 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
60 views
0
votes
1answer
211 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
62 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
132 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
81 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 ...
13
votes
3answers
1k views

Flying to Australia

I want to compare different flight routes to Australia and their lengths. So far I have written: ...
3
votes
2answers
103 views

Color Polygons Using GeoListPlot works individually, but not together

I have following problem: and So far so good. But GeoListPlot[{test[[;; 2]]}, ImageSize -> 300] does nothing (produces a blank map). Similarly, the code ...
2
votes
1answer
185 views

“ReliefMap” and “ContourMap” unable to download error

This question may be closed as "too localized". I post in the event other users have had this error and resolved it. The problem: inability to use "ReliefMap" or "ContourMap" options for ...
2
votes
0answers
310 views

Compact Map of USA with Alaska and Hawaii shown under California

Is there a more efficient way to include Alaska and Hawaii on a compact US map than the combination of the three GeoGraphics with Insets shown below? ...
4
votes
1answer
86 views

upper limit with `PlotStyle` in `GeoListPlot` in v10.1

Bug introduced in 10.0 and fixed in 10.2 Let's start with the code below: ...
3
votes
0answers
58 views

Exported CDF file does not include GeoGraphics [duplicate]

I'm trying to display a map on manipulate and the case is .nb files shows it but when I export it to .cdf this format not show the GeoGraphics map ...
14
votes
2answers
282 views

Extract bathymetry data from a map

Thanks everybody for edit and recommend. Here is a clearer version of my question. I have a map that shows bathymetry of a lake with legend showing depth relative to a range of color. The map ...
2
votes
1answer
185 views

How to overplot Graphics on GeoGraphics? [duplicate]

I have a parametric plot and a GeoGraphic of the same size and I want to overplot them. Show doesn't seem to like to use both at the same time though it will display either. How can I put regular ...