Questions tagged [geographics]

Questions on the family of Geo* functions, e.g. GeoGraphics, GeoEntities etc.

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32 views

How to smoothly zoom into GeoGraphics?

I was reading this article about the SpaceX launch and wanted to recreate the smooth map zoom: First of all, it doesn't know where the Kennedy Space Center is (what to do when that happens?): Using ...
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1answer
117 views

Apply the Four-color theorem to maps combining two countries

The following code is an enhanced version of the code from "Find a Four-Coloring of a Map of Europe". ...
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1answer
2k views

Combining two world maps

I am trying to combine two world maps with the command "show" and Mathematica indicates an error (see images underneath). Does anyone know what the problem might be and how I can solve it? I am ...
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0answers
117 views

How to get 3D building data in map functions?

Most modern mapping APIs have 3D model data for city buildings built-in. For example: Is there some way to get this functionality in the Geography related functions? I believe ...
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49 views

How to add the custom polygon to Entities?

Suppose I get the polygon data using the method here: How to get Polygon for a city from GeoJSON? Now how do I add it to the Entities so they make use of it? I ...
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1answer
51 views

How to get Polygon for a city from GeoJSON?

Following the instruction from the answer here: https://gis.stackexchange.com/questions/183248/getting-polygon-boundaries-of-city-in-json-from-google-maps-api I download the required city data in <...
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1answer
62 views

Nice GeoPath junctions in GeoGraphics

The two lines: coords = {{10, 10}, {10, 20}, {20, 20}, {20, 10}}; GeoGraphics[{Thickness[0.05], GeoPath[coords]}] return You can see that the junctions (top ...
2
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1answer
54 views

Identify and Assign Values to Regions in the Map

so I want to do a simulation of the spread of a certain disease in California with spatial considerations. As such, in order to carry out the PDE calculation, I will need to extract the region of ...
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0answers
32 views

Why do DynamicGeoGraphics and GeoGraphics not generate the same relief map?

Documentation indicates that DynamicGeoGraphics takes the same options as GeoGraphics, except with respect to projections. Thus, one might expect that given the same options both should produce the ...
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35 views

Get the entity of a city given its name and country

For example, input: "Berlin","Germany", output: something like Entity["City", {"Berlin", "Berlin", "Germany"}] The reason is, this article, https://yro.slashdot.org/story/19/09/22/1549223/researchers-...
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2answers
73 views

GeoListPlot - Workaround for distinct coloring of categories - improvement?

GeoListPlot supports multiple lists of locations but once the number of lists exceeds 3, the coloring function for the categories starts to recycle the colors. For example, adding a list to the ...
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1answer
78 views

Blurry labels in GeoGraphics

I want to keep the same GeoZoomLevel, but increase the resolution of the labels. I'm struggling to control that: ...
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2answers
80 views

GeoRegionValuePlot with a custom color function

I used unscaled coordinates with a custom color function to visualize data for life expectancy in African countries (see code below). Five intervals for five colors. But it seems tha WM choses the ...
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2answers
92 views

How to define NumberForm in LegendLabel?

To start: ...
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1answer
85 views

Question about BorderingCounties

I start with: escambiaFL = Interpreter["USCounty"]["Escambia county"] Answer: Escambia County, Florida, United States. Next; evaluate: ...
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0answers
148 views

Mollweide Projection of a Sphere [duplicate]

I want to recreate the following picture for a project. However, I am not sure how to do this with Mathematica. Is there an easy way to obtain just the "background" picture of the sphere without the ...
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1answer
95 views

How to build a structured data table

I'm going straight to the task; I start with the following list of Florida counties: ...
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59 views

Possible to create a 3D GeoRegionValuePlot?

I can create a zip-code-based 2D GeoRegionValuePlot, as follows: ...
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1answer
70 views

Getting a list of cities that are located in more than one county (within a state; in this case Florida, USA)

To get the list of counties in the State of Florida, I first evaluate: EntityClass["AdministrativeDivision", "USCountiesFlorida"] which gives me a pill-shaped ...
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1answer
59 views

Labeling points in GeoGraphics

I have the following code for labeling certain points at different latitude-longitude locations across the US stored in USLatLong. ...
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26 views

How do I apply GeoRegionValuePlot to a grouped Dataset?

I have a database like the one under this question which I transform into a Dataset by applying ...
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1answer
34 views

Why do some Administrative Divisions fail to translate into Entities?

I am trying to prime the following list into a database to run some geo-stats: ...
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3answers
69 views

GeoListPlot color function

Given a list of {latitude, longitude, speed} e.g. ...
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0answers
76 views

Ideas for visualizing the shape of a random walk

Context: In the context of (3D) random walks or polymer chains, a useful quantity for capturing and characterizing the shape of the walk or the conformation of the polymer in space is the gyration ...
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0answers
31 views

How to show the name and data in a customized map?, with GeoRegionValuePlot

How to show the name of each division and data/values (even customizing the TextStyle for adapt to different sizes) ?. Show all the data, not only when the mouse is over on a region. Or how to add ...
10
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2answers
607 views

Distance measures on a map of a game

I have an image which my DM made of map for a DND game and I want to do two things. Click on two points on my map, then based on the key for scaling have Mathematica tell me how far apart those ...
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0answers
70 views

Use country flag in chart style for a bar chart

I am creating a stacked bar chart from 2017 using the following data set ...
12
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1answer
230 views

Plotting cities with Callout labels on a globe?

This question essentially amounts to implementing a very basic version of GeoGraphics3D: ...
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0answers
48 views

Logarithmic scale in the legend of a GeoRegionValuePlot

Is there a way to make the bar legends show the values 1 to 9000 using a logarithmic scale than what Mathematica is automatically giving me? Here's my plot: The data I am using: ...
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0answers
63 views

GeoRegionValuePlot optimization

I have the following piece of code that plots a colormap by zipcode. Zips is an array of zip codes (All in the US mainland) and testscore is just some made up data for testing purposes. The list of ...
5
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1answer
115 views

Implementing GeoCallout?

Building off of a related question, I'm looking for a robust way of using Callouts for multiple locations in Geography. For example, I want to plot cities and their ...
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1answer
246 views

Geography in 3D perspective

I would like to build a GeoGraphics map showing a z-elevated perspective (e.g. the view from a plane). Specifically, I'm looking to use multiple ...
7
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1answer
59 views

Custom alignment for GeoMarkers

I need to align a GeoMarker at the bottom left of the marker: ...
2
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1answer
79 views

The Text in GeoMarker

In continuation the topics 1 and 2: I had the map "EKB" and I needed to mark some objects. Just for example: AES= TECgas= <...
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1answer
66 views

The specific GeoMarker from DataSet [closed]

With reference to this related topic, I have a map (called EKB): EKB= The coordinates of the map corners: ...
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0answers
68 views

GeoHistogram with Graphics [closed]

The GeoHistogram function appears to use different coordinates to graphics, so that when you overlay they do not have the same origin. For instance, if I use ...
3
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2answers
180 views

Placing markers on geographic map

I need to mark some objects in accordance with their coordinates (for example, in the form of blue point). And I found out two ways to realise it: Option 1. If I have the necessary map (called "EKB"...
3
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1answer
46 views

GeoPosition of a point a specified GeoDistance away

I am trying to plot text on a GeoGraphic[] at a certain distance from a defined point (located at Interpreter["Airport"]["KEWR"] ...
3
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1answer
104 views

Geographics Geolabels and Polygons

Using Vers. 11.3.0, I've prepared Maps of the various Japanese Prefectures (ken). Here, I create 3 such maps, as follows: ...
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0answers
84 views

GeoGraphics unable to download data for a given ranges from the Wolfram geo server [closed]

Lately I'm having problems evaluating GeoGraphics functions in Mathematica (version 11.3). For example, when I attempt to evaluate: ...
2
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1answer
48 views

Constant disk size on GeoGraphics Image

I would like to know how to generate a constant disk size on a GeoGraphics image. Currently my code is something like this: ...
5
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1answer
115 views

GeoHistogram with GeoRange fails with WeightedData

...
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0answers
52 views

Importing and and manipulating large GEOJSON files based on geographic locations

I have large GeoJson data files that I would like to import (i.e. buildings in a city, see image below for data structure) and then "cut out" only the buildings that are within approx. 100 GeoDisks (...
3
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2answers
122 views

How to insert short version of county names into a Geo Region Value Plot map

I have the following counties in Florida : ...
2
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1answer
112 views

For loop within GeoGraphics

I'm trying to plot a map with a list of destinations as Disks. I first input the cities into a list such as: ...
9
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2answers
142 views

Finding position at given distance in a GeoPath

Is there a way to find the geoposition of a given distance from start in a GeoPath? I want to mark equidistant positions along a track, for example, a mark every ...
7
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2answers
206 views

How to use an EntityClass

The two formats documented for EntityClass are ...
5
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1answer
50 views

BarLengend for GeoStyling[“ReliefMap”]

I would like to add a BarLegend for the elevation values used by the GeoBackground -> GeoStyling["ReliefMap"] option of ...
4
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2answers
227 views

How to get this Europe map using Mathematica?

I need to generate a Europe map with given lattitue limit and longitute limit as shown in the attached figure. I want the map to be more detailed and colorful (attractive). Furthermore, if I want to ...
2
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1answer
68 views

Inset in GeoGraphics

how to place Inset (or custom GeoLabels) in GeoGraphics? I've tried this ...