In rpruim/leaflethex: Hexbin Layers for 'Leaflet' Maps

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  out.width = "100%"
)

leaflethex

The goal of leaflethex is to create hexbin layers that can be added to plots made with the leaflet package.

This is a work in progress and is not yet a functional R package. Stay tuned!

Installation

You can install the released version of leaflethex from CRAN with:

install.packages("leaflethex")

And the development version from GitHub with:

# install.packages("devtools")
devtools::install_github("rpruim/leaflethex")

Example

This is a basic example which shows you how to add the hexbin layer to your leaflet map:

library(leaflethex)
df = tibble(
  lat = rnorm(100),
  lng = rnorm(100)
)
map <- leaflet::leaflet(df) %>% 
  leaflet::addTiles() %>% 
  leaflethex::addHexbin(
    radius = 19, 
    lowEndColor = "yellow", 
    highEndColor="red")
map

Parameters for addHexbin

data - data frame or tibble - alternate data to use for this hexbin instead of default map data
radius - numeric - choose the base size for the hexagons
opacity - decimal - between 0.0 and 1.0 - choose the percent of opacity for the hexagons
duration - numeric - positive milliseconds taken by the renderer to draw the hexagons
lowEndColor - string - choose the color for the smaller hexagons
highEndColor - string - choose the color for the larger hexagons

Note About Coloring - For best readable results, use colors that have high contrast in hue and shade such as red and yellow. White is generally a safe option for the lowEndColor, but the eye is better at picking up changes in hue than changes in shade. Blue to Yellow is also a good option. Generally highEndColor and lowEndColor should be opposites in terms of brightness.
uniformSize - boolean - choose if the size of the hexagons should be uniform or variable
uniformColor - string - choose a color to be uniform across the different sizes of hexagons instead of variable color
sizeSummaryFunction - string - choose a function from 'count', 'sum', 'max', 'min', 'mean', or 'median' or give a valid JS function (in development)
sizevar - string - the name of the variable used to calculate the size of the hex using the sizeSummaryFunction
colorSummaryFunction - string - choose a function from 'count', 'sum', 'max', 'min', 'mean', or 'median' or give a valid JS function (in development)
colorvar - string - the name of the variable used to calculate the color of the hex using the colorSummaryFunction