# Tagged Questions

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

183 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 ...
140 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 ...
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, ...
116 views

### GeoGraphics Manipulation

So far this is what i have: ...
317 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 ...
360 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 ...
280 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?
725 views

### Building graph based on the cities connection?

I built a Graph based on the permutations of city's connections from : ...
82 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 ...
239 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 ...
138 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, ...
87 views

### Georeferenced bitmaps

The command Export["filename.jpg", graphic] will export the graphic object graphic to the file ...
28 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: ...
288 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 ...
78 views

### Using SHP files to draw a density map

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 ...
251 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. ...
300 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 ...
357 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. ...
62 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: ...
67 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 ...
447 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 ...
325 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?
70 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 ...
130 views

### RandomPoint in geographic region from Polygon[region_]?

How do you generate a RandomPoint in a geographic region? ...
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. ...
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: ...
414 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: ...
245 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 ...
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 ...
409 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: ...
56 views

### How to get information from map using mouseover?

Assume I have the following zip code data: ...
207 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. ...
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 ...
60 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, ...
128 views

### Wolfram population density demonstration does not appear to work

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

### Flying to Australia

I want to compare different flight routes to Australia and their lengths. So far I have written: ...
102 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 ...
179 views

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 ...
285 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? ...
85 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: ...
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 ...
275 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 ...
169 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 ...
144 views

### Can't get map of Italy from Geographics [closed]

On Mathematica 10.1 Desktop version, I'm trying: GeoGraphics[Polygon[Entity["Country", "Italy"]]] but it doesn't get the Italy location and throws this error: ...
135 views

### Plotting country as a polygon

I am trying to reproduce an example from Geographics. GeoGraphics[Polygon[Italy]] It does not work. Using Ctrl+= this way: ...
916 views

### Map of Specific US States? (Isolated)

My question here is fairly basic, and I'm sure I'm overlooking something basic. I know about CountryData for creating shapes of entire countries, and it works, to ...
576 views

### Can A Plot Be Overlayed With A Map?

Some brief, only slightly important background. I am doing a research project using the data from NASA's GRACE mission. I wrote a short Perl script to take two data files and find the change in ...