overlay: Plot or add points using a color scale

In eva3dm: Evaluation of 3D Meteorological and Air Quality Models

Plot or add points using a color scale

Description

Custon plot for SpatRaster (terra R-package) object based on terra package

Usage

overlay(
  p,
  z,
  col,
  lim = range(z, na.rm = TRUE),
  symmetry = TRUE,
  pch = 19,
  cex = 1,
  outside = TRUE,
  add = FALSE,
  plg = list(tic = "none", shrink = 1),
  pax = list(),
  expand = 1.15,
  ...
)

Arguments

p	SpatVector points
z	column name or a vector of values to plot
col	color
lim	range of values for scale
symmetry	calculate symmetrical scale
pch	type of point
cex	character expansion for the points
outside	to include values outside range
add	add to existing plot
plg	list of parameters passed to terra::add_legend
pax	list of parameters passed to graphics::axis
expand	to expand the plot region
...	arguments to be passing to terra::plot

Value

No return value

Examples

sp<- terra::vect(paste0(system.file("extdata",package="eva3dm"),"/masp.shp"))
BR<- terra::vect(paste0(system.file("extdata",package="eva3dm"),"/BR.shp"))

p    <- readRDS(paste0(system.file("extdata",package="eva3dm"),"/sites_AQ_BR.Rds"))
p$id      <- row.names(p)
point     <- terra::vect(p)
point$NMB <- 1:45 - 20 # some values to plot

terra::plot(BR, main = 'add points',xlim = c(-52,-37),ylim = c(-25,-18))
terra::lines(BR)
terra::lines(sp, col = 'gray')
overlay(point,point$NMB,cex = 1.4, add = TRUE)

overlay(point,point$NMB,cex = 1.4, add = FALSE, main = 'new plot')
terra::lines(BR)
terra::lines(sp, col = 'gray')

eva3dm documentation built on April 4, 2025, 5:11 a.m.