pixelate: Spatial re-scaling of ocean data
In satin: Visualisation and Analysis of Ocean Data Derived from Satellites

pixelate

R Documentation

Spatial re-scaling of ocean data

Description

This function down-scales ocean data by quadrants of user defined size (in degrees) according to a given function.

Usage

pixelate(X, extent = 0.25, FUN = mean)

Arguments

`X`	a satin object as returned by `read.nasaoc`, `read.ghrsst`, `read.osunpp`, or `read.cmems`.
`extent`	size in degrees of the squared quadrant for the new spatial scale.
`FUN`	function to be applied for obtaining the quadrants' values, defaults to `mean`.

Details

The main interest of this function is to obtain smooth isolines for ocean data (e.g. isotherms). In order to use this function with Copernicus data returned from read.cmems, the appropriate indexing should be done.

Value

An object of class "satin". See satin-class for details.

Author(s)

Héctor Villalobos

Examples

# load and plot sample SST data 
data(dsst)
plot(dsst)

# change spatial resolution to 0.5 degrees
sst0.5 <- pixelate(dsst, extent = 0.5) 
plot(sst0.5)

satin documentation built on Sept. 23, 2022, 1:06 a.m.