Questions tagged [geographics]
Questions on the family of Geo* functions, e.g. GeoGraphics, GeoEntities etc.
256
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Animating battlefield data map of war in Ukraine
UPDATE on FINAL RESULT
Thanks to @SquareOne effort I generated higher-resolution videos with smoothing transitions that can be seen here:
https://www.linkedin.com/feed/update/urn:li:activity:...
- 73.4k
21
votes
2
answers
582
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Why does the GeoGraphics Frame show different Latitude than GeoPosition?
The map looks right, but the Latitude in the Frame looks wrong.
Am I making a mistake or is this a bug?
- 471
16
votes
3
answers
830
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Which external services are compatible with GeoServer?
Using the GeoServer option, it is possible to load map tiles from external services.
Which services are compatible with ...
- 236k
16
votes
1
answer
522
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Rotate Geographic map
I want the map to be rotated by -45 Degree. I want to coast to be horizontal (perfect -45 degree). I already have:
...
- 161
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1
answer
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Are Mathematica's maps copyright-free?
Are the maps available in Mathematica copyright-free? For instance, if I generate the image
...
- 4,933
15
votes
1
answer
483
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Plotting cities with Callout labels on a globe?
This question essentially amounts to implementing a very basic version of GeoGraphics3D:
...
- 31.7k
14
votes
3
answers
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Oak Island, extending the "Alignment", possible Great Circle?
During these days of COVID, I indulged in the guilty pleasure of watching The Curse of Oak Island - Season 8, Episode 4 Alignment, which viewed last night (1 Dec 2020).
During the episode, some "...
- 14.5k
14
votes
1
answer
243
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GeoDistance - higher spatial resolution / precision?
I'm having a small problem with GeoDistance.
I've chosen a target city – San Francisco – and I've computed distances from SF to five other cities. Then I draw ...
- 1,641
13
votes
1
answer
252
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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,...
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12
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4
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How can we find the longitude that cuts all the land on Earth in half?
Mathematica has already a specific function, RegionCentroid, that can be utilized to calculate the geographic center of any region. As it has been discussed in here ...
- 952
12
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2
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896
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What fraction of a mountain parcel has slopes over 15%?
Update: The original error was not from the elevation data, but from the use of "Degree". See below.
An agency interested in purchasing heavily sloped land has decided to use a criterion ...
- 235
10
votes
2
answers
740
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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 ...
- 802
10
votes
5
answers
396
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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 ...
- 42.1k
10
votes
3
answers
677
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PlotMarkers in GeoListPlot do not work
I try to use GeoListPlot to draw some points on a map. According to the manual, PlotMarkers -> {Automatic,s} should plot the ...
- 1,258
10
votes
1
answer
2k
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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 ...
- 301
10
votes
1
answer
513
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10
votes
1
answer
361
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Inserting county names on a map
I'm attempting to insert the county names on a map of Florida:
...
10
votes
2
answers
526
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How many Capitals are closer to me than my own?
A recent question in chat about "When you are in Aachen, Germany, five other countries capitals are closer than Berlin." triggered me to try to write something to find the cities ...
10
votes
1
answer
152
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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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9
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2
answers
450
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9
votes
2
answers
212
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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 ...
- 91
9
votes
2
answers
507
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How to use a Callout in GeoGraphics?
It seems callout is only for plots and not for graphics :(
...
- 3,780
9
votes
1
answer
436
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How to plot a vector field on a geographic map?
Suppose I want to VectorPlot on a geographic map a vector field defined on a Reference Ellipsoid.
The field is given to the following function as a ...
- 7,133
8
votes
3
answers
317
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GeoBubbleChart Colors
I'm struggling to find a way to change the default background color of a state, say the Netherlands, when using GeoBubbleChart.
When using GeoGraphics this is pretty easy. For example,
...
- 375
8
votes
2
answers
384
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Map of Ancient Rome
I managed to generate a map of the Italic Peninsula with the borders corresponding to 250BC. Is there a way I can shade the area of the Roman empire of the time?
...
- 281
8
votes
2
answers
281
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Finding the center of the viewpoint in DynamicGeoGraphics
My goal here is to be able to display the coordinates of the center of a DynamicGeoGraphic which updates as the map is dragged (without right clicking on the map to ...
- 301
8
votes
2
answers
365
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How to specify Log10 bin height scale in GeoHistogram function?
I have some data that is heavy tailed (density of geocoded entities), and I want to use the GeoHistogram function to plot it, but with a log scale. Data can be ...
- 903
8
votes
1
answer
137
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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, ...
- 3,479
8
votes
1
answer
340
views
How can I use multiple overlaid map layers (e.g. basemap, labels) in GeoGraphics?
We can use GeoServer to use map tiles from an external service. There are many compatible services:
Which external services are compatible with GeoServer?
These ...
- 236k
8
votes
1
answer
162
views
Can I dash only the invisible edges of dodecahedron? [duplicate]
I'm new to Mathematica and trying to draw a dodecahedron. Here's my code and output:
...
- 247
8
votes
2
answers
203
views
Distance to the ocean
Given a GeoPosition, what is the recommended method to calculate its distance from the ocean?
EDIT
As an example, Atlanta is ...
- 56.1k
8
votes
2
answers
199
views
Getting Area from GeoGraphics
I want to find the area covered by the reservoir of a dam using a satellite image.
This is what I have so far.
...
- 171
8
votes
1
answer
262
views
Geographic coordinate transformation to British National Grid
Before I wade into writing my own function, is anybody able to confirm whether MMA has an inbuilt method for converting longitude and latitude geographic coordinates (as used to specify the position ...
- 419
8
votes
2
answers
370
views
7
votes
2
answers
626
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Trying to Rotate the North Pole View of a Globe
My goal is to generate diagrams like this.
But I would like to be able to rotate the globe about the North Pole, so that I can represent different times of the day.
When I use ImageRotate, the ...
- 425
7
votes
2
answers
1k
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2D and 3D graphics that project a world map on Icosahedron
I would like to generate 2D and 3D graphics of icosahedron with continuous world map projected on them. An example is provided as follows:
It's trivial to generate 3D Icosahedron using ...
- 835
7
votes
3
answers
539
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How to plot a tilted map? [duplicate]
I would like to draw a rectangular map, but the sides are not aligned with the usual geographic grid. For example, the southern New Zealand island is stretched approximately along a diagonal in the ...
- 856
7
votes
1
answer
149
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GeoProjection - Spilhaus Projection of 1942 or Adam Square II
How can I make a GeoProjection like this?
The best I could get was:
...
- 4,594
7
votes
1
answer
593
views
How do I get GeoLabels to show up on map
Bug introduced in 11.0
This code draws the map, but does not show the labels.
...
- 93
7
votes
1
answer
651
views
GeoGraphics high resolution hybrid satellite-map
Is it possible to get a hybrid (map and satellite) high-resolution map similar to what we get from Google Earth Maps?
...
- 20k
7
votes
1
answer
324
views
Length of a continental perimeter
Excluding the islands, how can the length of the perimeter of a continent be calculated?
To make the question more concrete, what is the length of perimeter of the African continent, excluding the ...
- 56.1k
7
votes
1
answer
174
views
Orthogonal Geodesics to Solar Eclipse Geopath
I'm trying to find the perpendicular geodesics to the path the upcoming solar eclipse will take:
Path:
...
- 2,357
7
votes
2
answers
706
views
Add Text to GeoMarker
I have been going through the documentation of GeoMarker.
But I do not see any way to add text to these GeoMarkers. I would ...
- 171
7
votes
1
answer
103
views
Custom alignment for GeoMarkers
I need to align a GeoMarker at the bottom left of the marker:
...
- 31.7k
7
votes
1
answer
181
views
Using CityData[] vs. Entity for population
I am using v12.2.0-Win7-x64.
CityData[Entity[
"City", {"Shanghai", "Shanghai", "China"}], "Population"]
...
- 56.1k
7
votes
1
answer
146
views
7
votes
1
answer
145
views
How to add labels to GeoGridlines?
I'm trying to make a graph that looks like this:
This code gets close:
...
- 335
6
votes
3
answers
637
views
How to add city markers to a map of Germany?
I'm trying to draw markers for a list of Germany ZIP codes onto a map. Following the official documentation, it seems as if using GeoMarkeron values like
...
- 559
6
votes
1
answer
411
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 ...
- 31.7k
6
votes
1
answer
305
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GeoGraphics Day/Night way off
I've been struggling to figure out the correct GeoGraphics options to get the desired results. Here's what I have so far and the results that I'm getting:
...
- 1,536