ocedata (version 0.1.6)

secchi: Secchi depth dataset

Description

Measurements of Secchi depth in the North and Baltic Seas

Usage

data(secchi)

References

Thorkild Aarup 2002, Transparency of the North Sea and Baltic Sea--a Secchi Depth data mining study, Oceanologia, 44(3), 323-337.

Examples

# NOT RUN {
library(oce)
data(secchi, package="ocedata")
mapPlot(coastlineWorld, longitudelim=c(-5, 20), latitudelim=c(50, 66),
        grid=5, fill='gray', proj="lambert",
        parameters=c(lat0=50, lat1=65))
col <- rev(oceColorsJet(100))[rescale(secchi$depth, xlow=0, xhigh=20, rlow=1, rhigh=100)]
mapPoints(secchi$longitude, secchi$latitude, pch=20, cex=1, col=col)
mapPolygon(coastlineWorld, col='gray')
# }