Mapbox Density in R
How to make a Mapbox Density Heatmap in R
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Mapbox Access Token
To plot on Mapbox maps with Plotly you may need a Mapbox account and a public Mapbox Access Token. See our Mapbox Map Layers documentation for more information. If you're using a Chart Studio Enterprise server, please see additional instructions here.
Stamen Terrain Tile, no Token Needed
library(plotly)
quakes = read.csv('https://raw.githubusercontent.com/plotly/datasets/master/earthquakes-23k.csv')
fig <- quakes
fig <- fig %>%
plot_ly(
type = 'densitymapbox',
lat = ~Latitude,
lon = ~Longitude,
coloraxis = 'coloraxis',
radius = 10)
fig <- fig %>%
layout(
mapbox = list(
style="stamen-terrain",
center= list(lon=180)), coloraxis = list(colorscale = "Viridis"))
fig
Reference
See https://plotly.com/r/reference/#densitymapbox for more information and options!
What About Dash?
Dash for R is an open-source framework for building analytical applications, with no Javascript required, and it is tightly integrated with the Plotly graphing library.
Learn about how to install Dash for R at https://dashr.plot.ly/installation.
Everywhere in this page that you see fig
, you can display the same figure in a Dash for R application by passing it to the figure
argument of the Graph
component from the built-in dashCoreComponents
package like this:
library(plotly)
fig <- plot_ly()
# fig <- fig %>% add_trace( ... )
# fig <- fig %>% layout( ... )
library(dash)
library(dashCoreComponents)
library(dashHtmlComponents)
app <- Dash$new()
app$layout(
htmlDiv(
list(
dccGraph(figure=fig)
)
)
)
app$run_server(debug=TRUE, dev_tools_hot_reload=FALSE)