s2dverification (version 2.5.0)

PlotStereoMap: Maps A Two-Dimensional Variable On A Polar Stereographic Projection

Description

Map a two dimensional matrix with (longitude, latitude) dimensions on a polar stereographic projection.

Usage

PlotStereoMap(var, lon, lat, latlims = c(60,90), toptitle = "", sizetit = 1,  units = "", brks = NULL, cols = NULL, filled.continents = FALSE,  dots = NULL, intlat = 10, drawleg = TRUE, subsampleg = 1,  colNA = "white")

Arguments

var

Matrix to plot with (longitude, latitude) dimensions.

lon

Array of longitudes.

lat

Array of latitudes.

latlims

Latitudinal limits of the figure. Example : c(60, 90) for the North Pole c(-90,-60) for the South Pole

toptitle

Title, optional.

sizetit

Multiplicative factor to increase title size, optional.

units

Units, optional.

brks

Colour levels, optional.

cols

List of colours, optional.

filled.continents

Continents filled in grey (TRUE) or represented by a black line (FALSE). Default = FALSE.

dots

Matrix with TRUE / FALSE flags to add black dots over the maps (to show where a score is significant for example).

intlat

Interval between latitude circles. Default = 10deg.

drawleg

Draw a colorbar.

subsampleg

Supsampling factor of the interval between ticks on colorbar. Default = 1 = every colour level.

colNA

Color used to represent NA. Default = 'white'

Examples

data <- matrix(rnorm(100 * 50), 100, 50)
x <- seq(from = 0, to = 360, length.out = 100)
y <- seq(from = -90, to = 90, length.out = 50)
breaks <- seq(from = min(data, na.rm = TRUE), to = max(data, na.rm = TRUE), 
              length.out = 21)
colors <- colorRampPalette(c("blue", "lightblue", "white", "yellow", "red"))
colors <- colors(20)
PlotStereoMap(var = data, lon = x, lat = y, latlims = c(60, 90), brks = breaks,
              cols = colors, toptitle = "This is the title", sizetit = 0.8)