Questions tagged [cartography]
127 questions
3
votes
0 answers
How do I handle legend boxes with tmap library?
Please, consider the following example:
library(tmap)
data("World")
tm_shape(World) +
tm_polygons("HPI")
This gives me the following map:
My problem is the legend. The legend boxes that show the colors are squares that are directly next to each…
coleuch
- 31
- 5
3
votes
2 answers
Polar/Stereographic map in R
I am trying to produce a sterographic map similarly to this:
What I am trying to do is to add:
Coordinates
Graticule lines
This can be in both base R or with ggplot2. Any help is appreciated.
My attempts so far
library(rgdal)
library(raster) …
Philippe Massicotte
- 1,321
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- 24
3
votes
0 answers
Merge/join geometries with TopoJSON Client
Is it possible, using TopoJSON Client to merge/join geometries. So, for example, this:
{"type":"Topology","objects":{"areas":{"type":"GeometryCollection","geometries":[{"type":"MultiPolygon","properties":{"common":"S B","class":"range…
dbj44
- 1,919
- 2
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- 45
3
votes
2 answers
Cartography constraints with TopLayoutGuide
I have a view which I want to look like this:
|---------------|
| | <- navBar
|---------------|
| | <- topView
|---------------|
| |
| |
| |
|---------------|
Everything I want…
Nat
- 12,032
- 9
- 56
- 103
2
votes
1 answer
Placing limits on edge of VegaLite map
I'm using VegaLite and VegaDatasets to show a Mercator projection of the world map, and plot a point at a specific latitude and longitude. So far, this works to produce the map:
data = DataFrame(x=[-45], y=[35])
scale = 100
world =…
AaronJPung
- 1,105
- 1
- 19
- 35
2
votes
1 answer
OpenLayers creating a complex style (polygon with a hole and a stroke on one side)
There was a difficulty in creating a complex polygon style.
The wording is as follows:
the polygon should be drawn as a polygon with a hole and a stroke on the outside.
In a difficult (as it seems to me) way, I made drawing a polygon with a…
luzhskij
- 31
- 6
2
votes
1 answer
How to create State & district level map in using GADM and ggplot?
I am using Covid data & looking to plot State & district level Indian data on map.
I have State, District Name of India along with Cases but do not have needed lat, long for them.
I came across this so post How to map an Indian state with districts…
ViSa
- 1,563
- 8
- 30
2
votes
1 answer
Is there any way to limit the size of the circle while it is being drawn in leaflet-geoman?
As you may know, in leaflet-geoman there's a function called "drawCircle" that can let you draw a circle having a pivot in the center and expanding the radius with the mouse.
For my usage, I wanted to limit that feature WHILE the circle it's being…
Federico Torrielli
- 25
- 5
2
votes
2 answers
Colorado mis-plot
I'm trying the R cartography package. Had to work to find a US state shapefile that would like to work with the cartography stuff - many seemed too big, etc.. I seemed to get everything going well, but the state of Colorado…
James Holland
- 1,102
- 10
- 17
2
votes
1 answer
D3 cartography: lon/lat circles in wrong place on map (projection)
I have a question about D3 cartography.
I am working on a little project and I am new to D3.
I have started out from this example: http://bl.ocks.org/mbostock/5914438
Instead of the showing the state-mesh, I would like to show circles on the map in…
user10575146
2
votes
1 answer
Data model for meridians and parallels
I'm thinking about some suitable model for storing meridians and parallles. Meridians and parallels should be kept as lines.
Possible models:
A) "Topologic" model
Each point stores pointer to north, south, east and west points.
class Point
{
…
Robo
- 311
- 5
- 10
2
votes
1 answer
R: Counting how many polygons between two
I was trying to recreate a map showing how many municipals are you away from Cracow:
and to change the city from Cracow to Wrocław. The map was done in GIMP.
I got a shapefile (available here: http://www.gis-support.pl/downloads/powiaty.zip). I…
AAAA
- 461
- 6
- 22
2
votes
1 answer
How to apply polygon tint bands in Leaflet?
The image shows a tint band (aka shapeburst fill) applied to a polygon shapefile in QGIS. I've been paging through leaflet documentation trying to find something similar without success.
Is there a method to apply a tint band similar to the…
Borealis
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- 112
2
votes
1 answer
D3JS TopoJSON map of Australia: projection accurate but no country rendered
I am generating a TopoJSON cartogram of Australia. I have successfully generated a GeoJSON map of Australia. I then converted that data to TopoJSON but cannot render the map.
Things to note:
I can accurately project lat/long points of cities…
Daniel
- 433
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- 3
- 18
2
votes
0 answers
D3.js transition with canvas is not smooth when mapping
I'm trying to transition between two states of a d3.js map drawn on canvas and running into a little trouble: The transitions just aren't all that smooth. It's nothing like the transitions I've had with svg.
I am using the pattern described by Irene…
Union find
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