Questions tagged [geographics]

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

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4 votes
2 answers
137 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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4 votes
1 answer
121 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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3 votes
2 answers
224 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 ...
2 votes
2 answers
129 views

How to define NumberForm in LegendLabel?

To start: ...
1 vote
1 answer
104 views

Question about BorderingCounties

I start with: escambiaFL = Interpreter["USCounty"]["Escambia county"] Answer: Escambia County, Florida, United States. Next; evaluate: ...
1 vote
0 answers
209 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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1 vote
1 answer
120 views

How to build a structured data table

I'm going straight to the task; I start with the following list of Florida counties: ...
3 votes
0 answers
106 views

Possible to create a 3D GeoRegionValuePlot?

I can create a zip-code-based 2D GeoRegionValuePlot, as follows: ...
  • 3,476
2 votes
1 answer
145 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 ...
2 votes
1 answer
308 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. ...
0 votes
0 answers
43 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 ...
0 votes
1 answer
44 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: ...
2 votes
3 answers
162 views

GeoListPlot color function

Given a list of {latitude, longitude, speed} e.g. ...
3 votes
0 answers
186 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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10 votes
1 answer
203 views

How to speed up GeoWithinQ?

GeoWithinQ is a very useful function - is this point within this area? However, it is quite slow. It's not unheard of to have large numbers of points - for instance,...
  • 12.7k
10 votes
2 answers
675 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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1 vote
0 answers
197 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 ...
  • 399
13 votes
1 answer
409 views

Plotting cities with Callout labels on a globe?

This question essentially amounts to implementing a very basic version of GeoGraphics3D: ...
  • 30.9k
2 votes
0 answers
128 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: ...
  • 399
2 votes
0 answers
83 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 votes
1 answer
195 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 ...
  • 30.9k
6 votes
1 answer
358 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 ...
  • 30.9k
7 votes
1 answer
92 views

Custom alignment for GeoMarkers

I need to align a GeoMarker at the bottom left of the marker: ...
  • 30.9k
2 votes
1 answer
197 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= <...
0 votes
1 answer
89 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: ...
1 vote
0 answers
82 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 ...
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3 votes
2 answers
359 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 votes
1 answer
67 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"] ...
4 votes
1 answer
197 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: ...
  • 1,526
1 vote
0 answers
184 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 votes
1 answer
68 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 votes
1 answer
166 views

GeoHistogram with GeoRange fails with WeightedData

Bug introduced in 11.3 or earlier, fixed in 12.1.0 ...
4 votes
0 answers
109 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 (...
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3 votes
2 answers
209 views

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

I have the following counties in Florida : ...
2 votes
1 answer
129 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 votes
2 answers
185 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 ...
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8 votes
2 answers
335 views

How to use an EntityClass

The two formats documented for EntityClass are ...
5 votes
1 answer
70 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 votes
2 answers
295 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 votes
1 answer
114 views

Inset in GeoGraphics

how to place Inset (or custom GeoLabels) in GeoGraphics? I've tried this ...
  • 1,347
4 votes
1 answer
207 views

Completing graph edges "around the world" to GeoPlot an itinerary

My central goal is to plot a complex international inter-city itinerary on a world map, which might include repetitions of a single segment (e.g., New York to London or London to New York). The ...
10 votes
5 answers
354 views

Generating different GeoPaths for multiple equivalent segments

Is there an efficient and elegant method so that multiple calls of GeoPath for the same segment (path) yield visibly separate segments on a map? For instance, this ...
3 votes
1 answer
72 views

Image Adjustment wipes out overplots?

I'm having a problem where when I display lines over an image (using Show) it works fine, but if I adjust the image colors first (using either ...
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2 votes
1 answer
132 views

Annotate a vector using GeoGraphics

I start with the following "annotation function": ...
1 vote
0 answers
73 views

GeoGraphics Question

I have the new and I have the following (simple) questions: I want to align the label (example Netherlands with flag) to be drawn at the graphics boundaries. Make an arrows between the label and the ...
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9 votes
0 answers
97 views

Adding a new GeoProjection?

The documentation for GeoProjectionData gives a list of supported GeoProjections. I was not able to find any documentation on ...
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3 votes
1 answer
97 views

Matching Aspect Ratios between two GeoGraphics with Entities for GeoRange

I'm making a basic 50-state map of population (using a log scale). Given the usual crucible of figuring out what to do with Hawaii and Alaska, I thought I would make the same ...
8 votes
1 answer
130 views

How to make GeoListPlot rectangular?

I have a GeoListPlot as below:- gr = {{20, 70}, {-30, 30}}; GeoListPlot[Entity["City", {"Paris", "IleDeFrance", "France"}], GeoRange -> gr] As you can see, ...
  • 3,389
3 votes
1 answer
67 views

How to get the coordinates of the 4 vertexes of a GeoListPlot?

I have a GeoListPlot as below. How can I get the latitude/longitude coordinates of the 4 vertexes of the GeoListPlot? I need the ...
  • 3,389
0 votes
1 answer
205 views

Problem with resolution of exported image

I want to make a map (of Germany) with certain positions marked. This is just a MWE, in fact there are much more positions. What I did: ...
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