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.

learn more… | top users | synonyms

0
votes
0answers
54 views

How do I extract the coordinates of a GeoGraphics polygon? [on hold]

I would like to use Polygon with GeoGraphics to perform some work on data within the boundary formed by the polygon. The work is ...
4
votes
1answer
89 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 ...
1
vote
1answer
62 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. ...
9
votes
3answers
1k views

Flying to Australia

I want to compare different flight routes to Australia and their lengths. So far I have written: ...
4
votes
1answer
96 views

What should I do if the geographical map provided by Mathematica doesn't show some rivulets?

I have a list of geographical coordinates(maybe the coordinates are not that accurate, but the problem is not that vital): ...
9
votes
1answer
98 views

How can access to curated data needed by GeoRegionValuePlot be speeded up?

Seems that GeoRegionValuePlot requests data from the internet multiple times to process its plot. As an example, let's graph smoking per capita worldwide. ...
4
votes
3answers
186 views

How to correctly project heat map onto map

I'm importing the NGA ASAM piracy database into Mathematica for analysis. ...
3
votes
1answer
93 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 ...
11
votes
1answer
208 views

Geographic background containing both outlines and contours: how?

I would like to create a map which will show lakes and rivers together with elevation contours and contour labels. What is the simplest way to do this with ...
17
votes
3answers
596 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?
8
votes
1answer
385 views

How to combine more locations (GPS coordinates inside one city) with Google map?

I have a list of GPS coordinates.E.g. GPSList = {{47.680800, 17.626446}, {47.681078, 17.627283}, {47.682759, 17.631810}}; I would like to crate a Google Map ...
3
votes
2answers
338 views

How to get a country's official languages?

According to Wikipedia Of the 193 widely recognized countries, 178 have an official language at the national level (NB:or more than one) The only exceptions are: Cyprus, Czech Republic, ...
3
votes
1answer
203 views

How do I convert from NAD 83 State Plane Coordinates to Latitude and Longitude?

I am trying to convert NAD 83 State Plane New York Long Island coordinates to Latitude/longitude. Below is my code - what am I doing wrong? ...
2
votes
1answer
110 views

Distances of locations in the matrix form

I want to have the distances of the cities in the matrix form.How can I have it for example for the cities like followings that also includes the distance of the city from itself which is zero: ...
7
votes
1answer
254 views

Is it possible to construct a topological map of road network of Bangalore?

I saw this example wherein the CityData gives the map of a city. But this is available for a relatively small set of curated regions. Is it possible to extract ...
4
votes
1answer
433 views

How to create an interactive map of the 50 states showing certain data in tool tips boxes for health care policy development?

To create a means of displaying information about the distribution of primary care providers, the population density and the average yearly Medicare expenditure per enrollee for each state, I would ...
2
votes
2answers
272 views

City/Country Names by GeoLocation

How do I get the city and country names from the output of FindGeoLocation[] {lat, long} ?
20
votes
1answer
637 views

xkcd: Geohashing in Mathematica

On May 21, 2008, an xkcd comic proposed a method for creating a random, local meeting place that can't be determined until the day of the meeting. This method is usually used for xkcd fan events, ...
4
votes
3answers
154 views

Maintaining map dimensions after using Colorize

I am trying to beautify a map by using Colorize as demonstrated in the Mathematica documentation. First, I import a shapefile from DIVA-GIS for France which ...
0
votes
1answer
149 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. ...
1
vote
2answers
162 views

Indicating the probability that a weather datum is above/below some given value on a geographic map

With help of the previous questions here, I am analyzing weather data as daily MeanWindSpeed of some cities with the following code: ...
6
votes
2answers
267 views

Why is CityData[All, “Coordinates”] failing?

When I evaluate CityData[All, "Coordinates"] Mathematica returns {Missing["NotAvailable"], Missing["NotAvailable"]} ...
2
votes
1answer
334 views

Geocoding addresses to geographic coordinates

I am writing a research proposal for a project on voter turnout as related to proximity to mass transit. The first part of my project would require geocoding hundreds of thousands of addresses, but ...
8
votes
3answers
727 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 ...
9
votes
2answers
965 views

Using J/Link to decode Google Maps Polyline strings

I would like to use this java code inside Mathematica using J/Link. It converts Google Maps API Encoded Polylines to a list of points. I tried the Mathematica tutorial but got lost. There is the Java ...
15
votes
1answer
364 views

CountryData and the areas of the world

If I add the WaterArea and the LandArea of the world, I get the same number as if I asked for the total area of the world in the first place: ...
17
votes
3answers
903 views

Highlighting individual countries on a world map

Consider the following list of countries which I would like to highlight on a world map: ...
15
votes
1answer
596 views

Using Texture to color countries according to their timezones

So I'm trying to make a world map, where each country is colored according to its timezone. Except, for countries with multiple timezones, the country is filled with vertical stripes of colors ...
35
votes
1answer
1k views

Google Map in Notebooks?

Using Mark McClure's GPXToGoogleMap results in a HTML and Javascript code which can be viewed by any browser. Is it possible to load this map into the notebook, which obviously means for example that ...