Questions tagged [geographics]
Questions on the family of Geo* functions, e.g. GeoGraphics, GeoEntities etc.
137
questions
1
vote
0answers
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 ...
4
votes
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".
...
10
votes
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 ...
5
votes
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 ...
0
votes
0answers
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 ...
1
vote
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 <...
6
votes
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
votes
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 ...
1
vote
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 ...
1
vote
0answers
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-...
4
votes
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 ...
4
votes
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:
...
3
votes
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 ...
2
votes
2answers
92 views
1
vote
1answer
85 views
Question about BorderingCounties
I start with:
escambiaFL = Interpreter["USCounty"]["Escambia county"]
Answer: Escambia County, Florida, United States.
Next; evaluate:
...
1
vote
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 ...
1
vote
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:
...
3
votes
0answers
59 views
Possible to create a 3D GeoRegionValuePlot?
I can create a zip-code-based 2D GeoRegionValuePlot, as follows:
...
1
vote
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 ...
2
votes
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.
...
0
votes
0answers
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
...
0
votes
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:
...
1
vote
3answers
69 views
4
votes
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 ...
0
votes
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
votes
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 ...
1
vote
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
votes
1answer
230 views
Plotting cities with Callout labels on a globe?
This question essentially amounts to implementing a very basic version of GeoGraphics3D:
...
2
votes
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:
...
2
votes
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
votes
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 ...
6
votes
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
votes
1answer
59 views
2
votes
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=
<...
0
votes
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:
...
1
vote
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
votes
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
votes
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
votes
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:
...
1
vote
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
votes
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
votes
1answer
115 views
4
votes
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
votes
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
votes
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
votes
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
votes
2answers
206 views
5
votes
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
votes
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
votes
1answer
68 views
