Wrap periodic data to any range

Periodic data can be defined only in one period and be extended to any arbitrary range.

WrapCircular(x, circular = "lon", wrap = c(0, 360))

Arguments

x

a data.frame

circular

the name of the circular dimension

wrap

the wrap for the data to be extended to

Value

A data.frame.

See also

geom_contour2

Other ggplot2 helpers: MakeBreaks(), geom_arrow(), geom_contour2(), geom_contour_fill(), geom_label_contour(), geom_relief(), geom_streamline(), guide_colourstrip(), map_labels, reverselog_trans(), scale_divergent, scale_longitude, stat_na(), stat_subset()

Examples

library(ggplot2)
library(data.table)
data(geopotential)
g <- ggplot(geopotential[date == date[1]], aes(lon, lat)) +
    geom_contour(aes(z = gh)) +
    coord_polar() +
    ylim(c(-90, -10))

# This plot has problems in lon = 0
g


# But using WrapCircular solves it.
g %+% WrapCircular(geopotential[date == date[1]], "lon", c(0, 360))
#> Warning: 'WrapCircular' is deprecated, use ggperiodic::wrap instead.


# Aditionally data can be just repeatet to the right and
# left
ggplot(WrapCircular(geopotential[date == date[1]], wrap = c(-180, 360 + 180)),
       aes(lon, lat)) +
    geom_contour(aes(z = gh))
#> Warning: 'WrapCircular' is deprecated, use ggperiodic::wrap instead.


# The same behaviour is now implemented directly in geom_contour2
# and geom_contour_fill
ggplot(geopotential[date == date[1]], aes(lon, lat)) +
    geom_contour2(aes(z = gh), xwrap = c(-180, 360 + 180))
#> Warning: 'xwrap' and 'ywrap' will be deprecated. Use ggperiodic::periodic insead.