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Questions tagged [cartogram]

A cartogram is a map where surfaces are proportional to a given statistical variable.

A cartogram is a map where surfaces are proportional to a given statistical variable.

Useful link

42 questions
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Cartogram + choropleth map in R

I've been using ggplot2 lately to create a bunch of choropleths. I was wondering if it was possible to use ggplot2 to create a map similar to this (from WorldMapper): It's a choropleth where the shapefile polygons are distorted to represent…
baha-kev
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Drawing cartograms with Matplotlib?

In case somebody doesn't know: A cartogram is a type of map where some country/region-dependent numeric property scales the respective regions so that that property's density is (close to) constant. An example is from worldmapper.org. In this…
gspr
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Algorithm (and tools) to create a weighted-cartogram from a shapefile?

What algorithm can I use to produce a weighted-cartogram such as the one below: ? I can generate a shapefile plot using code from R, .NET libraries and also using PostGIS. However I can't find the search terms to use to find an implementation of…
JustinJDavies
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Use Rcartogram on a SpatialPolygonsDataFrame object

I'm trying to do the same thing asked in this question, Cartogram + choropleth map in R, but starting from a SpatialPolygonsDataFrame and hoping to end up with the same type of object. I could save the object as a shapefile, use scapetoad, reopen it…
duncandoo
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installing Rcartogram packages - error message

I am trying to build a cartogram like here Installation from the link does not work: `install.packages('Rcartogram', repos = 'http://www.omegahat.org/R', type = 'source')` Installing package into ‘C:/Users/Milena/Documents/R/win-library/3.2’ (as…
SuzukiBlue
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Dissolving hexmap polygon shape files

I am trying to produce an outline for a hexagonal cartogram by dissolving the inner polygons via the unionSpatialPolygons or aggregate functions. I am getting stray hexs that do not dissolve... a dummy example to show the problem: # grab a dummy…
guyabel
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Creating Hexagonal Cartogram JSON file in d3

I am trying to make a hexagonal cartogram in d3.js, similar to the one found here. Mike Bostock mentions this in his (awesome) Eyeo 2013 talk, and has created a tool to allow a user to point-and-click draw a hexagonal polygon (here). What I'm…
mollymerp
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"Error: attribute d: Expected number"

I'm trying to create a cartogram using cartogram.js and d3.js. I've used the examples found in the cartogram.js repo and here to put together a script that generates a world map inside an SVG using the d3.geo.mercator() projection and now I'm trying…
James Brooks
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R - installing FFTW3 package on Windows machine

I am trying to build a cartogram with R following the algorithm of Gastner & Newman on diffusion-based methods for producing density-equalizing maps I have found a recipe on how to do it with help of the Getcartr and Rcartogram packages; however,…
SuzukiBlue
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Global cartogram in R

I am trying to create a global cartogram using the cartogram package in R. I am trying to use the data from wrld_simpl. What I expect is a cartogram in which the Population ("Pop2005" variable) is plotted. The code I have developed is…
Wilmer Cristobal Guzman-Vilca
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Issue while creating cartogram plot in r

I am new to Spatial data & cartogram lib and getting some issues while trying to recreate plot from: https://www.r-graph-gallery.com/a-smooth-transition-between-chloropleth-and-cartogram.html Lib &…
ViSa
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Maps in R using Cartogram function

I am struggling with an error that returns after applying cartogram_cont() function Here is the code and the error carto3 <- cartogram_cont(map33, "resi_eur_avg", itermax=5) The error message appears after the first iteration as: Mean size error…
ibrahim shaheen
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Error with Plotting Cartogram - 'This function does not give correct centroids and distances for longitude/latitude data.'

I'm trying to use the wrld_simple data from the maptools package to plot a Cartogram that involves some European countries based on their Population in 2005: countries = c('Austria', 'Belgium', 'Bulgaria', 'Cyprus', 'Czech Republic', 'Denmark',…
Dan
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Creating a Cartogram in R

I am trying to make a cartogram in R to show the number of occurrences in each area of the UK. My data currently looks like this: Area Occurences lon lat 1 Greater London East North UK 200 -0.0936496…
George
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using cartogram.js for visualizing information in a global map

I'm trying to adapt this example http://prag.ma/code/d3-cartogram/ to show information about obesity in 2002, 2005 and 2010 around the world. This the visualization: http://datauy.github.io/obesity-cartogram with a link to the code in the same page.…
gaba
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