plot_map3: Plot a nice map with ggplot.
In stineb/rbeni: Useful R functions for Beni.

plot_map3

R Documentation

Plot a nice map with ggplot.

Description

Returns a cowplot object for a global map plot.

Usage

plot_map3(
  obj,
  maxval = NA,
  breaks = NA,
  lonmin = -180,
  lonmax = 180,
  latmin = -90,
  latmax = 90,
  nbin = 10,
  legend_title = waiver(),
  colorscale = viridis::viridis,
  do_reproj = FALSE,
  plot_title = waiver(),
  plot_subtitle = waiver(),
  combine = TRUE,
  varnam = NULL,
  ...
)

Arguments

`obj`	An object, either a `RasterBrick` (returned from a `raster::brick()` function call), or a list returned from a `rbeni::read_nc_onefile()` function call.
`maxval`	A numeric value specifying the maximum value for which the color key is to be extended. Defaults to `NA` (the 99% quantile of values is used).
`breaks`	A numeric vector specifying the breaks for the color scale. Defaults to `NA`, i.e. breaks are determined automatically based on `nbin` and `maxval`.
`lonmin`	Left edge (longitude, in degrees), defaults to -180.
`lonmax`	Right edge (longitude, in degrees), defaults to 180.
`latmin`	Lower edge (latitude, in degrees), defaults to -90.
`latmax`	Upper edge (latitude, in degrees), defaults to 90.
`nbin`	An integer specifying the number of bins used for the color key.
`legend_title`	A character string specifying the legend title (annotation above the color key)
`colorscale`	Either function that returns a set of colors or a vector of color names from which to interpolate. Defaults to `virids::viridis`.
`do_reproj`	A boolean specifying whether to re-project the map to Robin projection
`plot_title`	A character string specifying the plot title
`plot_subtitle`	A character string specifying the plot subtitle
`combine`	A boolean specifying whether the map and the colorscale should be combined using cowplot. Defaults to `TRUE`. If `FALSE`, a list of elements are retruned, where elements are the ggplot2 plot object and the coloscale object returned by the call to plot_discrete_cbar.
`varnam`	If `obj` is a rbeni-nc object (returned by `read_nc_onefile()`), `varnam` must be provided (a character string specifying the variable name in `obj$vars[[varnam]]`).