plotSatin: Easy maps from satellite data

In r-forge/satin: Functions for downloading, reading and displaying satellite data for oceanographic applications with R

Description

Visualisation of satellite data (mainly SST and chlorophyll-a concentration) from Aqua Modis and SeaWiFS products.

Usage

plotSatin(satin.obj, image = 1, xlim = NULL, ylim = NULL, 
          zlim = NULL, xoffs = 0, yoffs = 0, map = NULL, 
		      map.col = "grey", map.outline = "black", 
		      colimg = NULL, colbar = TRUE, colbar.pos = "r", 
		      main = NULL, main.pos = "tr", log = FALSE, ...)

Arguments

satin.obj	a satin object with satellite data as returned by read.oceancolor
image	number of image to plot
xlim	minimum and maximum longitude values for the map
ylim	minimum and maximum latitude values for the map
zlim	minimum and maximum parameter values for the map
xoffs	a value to add/substract from xlim to help centering the map and the image
yoffs	a value to add/substract from ylim to help centering the map and the image
map	a user defined map of class "sp"
map.col	color for the map
map.outline	color for the map outline
colimg	a list with a vector of color names and a vector of color breaks as returned by genColorPal
colbar	logical. If TRUE a color bar is added to the plot
colbar.pos	position of the color bar. Either top "t" or right "r" side
main	title for the plot, defaults to period in satin.obj
main.pos	position for the title: top right ("tr"), top left ("tl"), bottom right ("br") or bottom left ("bl")
log	logical. If TRUE the common (i.e., base 10) logarithm of the parameter is obtained and mapped. This may be useful for chlorophyll concentration data
...	further arguments to pass to plot

Details

The only mandatory argument for this function to produce a map is an object of class "satin" (satin.obj), which contains the longitude and latitude vectors and the corresponding parameter array (SST or chlorophyll concentration). All the other arguments are optional and are conceived to customize the map produced.

Value

a map of the corresponding parameter is produced

Author(s)

Héctor Villalobos

See Also

read.oceancolor

Examples

# SST data (Aqua Modis)
data(dbsst)
plotSatin(dbsst)
plotSatin(dbsst, map=dmap, colbar.pos="t")

# Chl-a concentration data (Aqua Modis) in actual units and in logarithmic scale
data(dchla)
plotSatin(dchla, map=dmap, xlim=c(-130, -105), ylim=c(20, 40))
x11()
plotSatin(dchla, map=dmap, xlim=c(-130, -105), ylim=c(20, 40), log = TRUE)  

r-forge/satin documentation built on Feb. 18, 2022, 2:39 a.m.