spplot1: spplot1 function

In bentaylor1/spatsurv: Bayesian Spatial Survival Analysis with Parametric Proportional Hazards Models

Description

A function to provide spplot-like plotting capability but NOT using trellis graphics. This function also acts as an interface for fast plotting of SpatialPolygonsDataFrame or SpatialPixelsDataFrame objects using leaflet HTML plotting capabilities to get zoomable plots with real-world context: transformation to the correct projection is done automatically.

Usage

spplot1(x, what, palette = brewer.pal(5, "Oranges"), breaks = NULL,
  legpos = "topleft", fun = identity, include.lowest = TRUE, bty = "n",
  bg = NULL, printlegend = TRUE, bw = FALSE, useLeaflet = FALSE,
  urltemplate = urlTemplate("Stamen_Toner"), fillOpacity = 0.5,
  legendOpacity = 0.5, OSMbg = NULL, leafletLegend = TRUE,
  alpha.f = 0.5, ...)

Arguments

x	a SpatialPolgonsDataFrame or a SpatialPointsDataFrame
what	the name of the variable to plot
palette	the palette, can either be a vector of names of colours, or a vector of colours produced for example by the brewer.pal function.
breaks	optional breaks for the legend, a vector of length 1 + length(palette)
legpos	the position of the legend, options are 'topleft', 'topright', 'bottomleft', 'bottomright'
fun	an optional function of the data to plot, default is the identity function
include.lowest	see ?cut
bty	see ?legend
bg	see ?legend
printlegend	logical: print the legend?
bw	Logical. Plot in black/white/greyscale? Default is to produce a colour plot. Useful for producing plots for journals that do not accept colour plots.
useLeaflet	whether to use leaflet to produce a zoomable map this requires the leaflet package, available by issuing the command "devtools::install_github('rstudio/leaflet')"
urltemplate	template for leaflet map background, default is urlTemplate('Stamen-Toner'), but any valid web address for leaflet templates will work here. See ?urlTemplate.
fillOpacity	see ?addPolygons
legendOpacity	see opacity argument in function addLegend
OSMbg	optional OpenStreetMap background to add to plot, obtain this using the function getBackground
leafletLegend	logical, display the leaflet legend?
alpha.f	point transparency, see ?adjustcolor, default is 0.5
...	other arguments to be passed to plot

Details

See http://leaflet-extras.github.io/leaflet-providers/preview/ for examples of leaflet templates.

Instructions on installing the leaflet R package are available from https://rstudio.github.io/leaflet/

Value

either produces a plot or if useLeaflet is TRUE, returns a leaflet map widget to which further layers can be added

See Also

urlTemplate, getBackground, brewer.pal

bentaylor1/spatsurv documentation built on May 12, 2019, 3:02 p.m.