argoGrid {oce}R Documentation

Grid a Argo drifter path

Description

Grid a Argo drifter, by interpolating to fixed pressure levels.

Usage

argoGrid(argo, p, debug=getOption("oceDebug"), ...)

Arguments

argo

a argo object to be gridded.

p

optional indication of the pressure levels to which interpolation should be done. If this is not supplied, the pressure levels will be calculated based on the existing values, using medians. If p="levitus", then pressures will be set to be those of the Levitus atlas, given by standardDepths, trimmed to the maximum pressure in argo. If p is a single numerical value, it is taken as the number of subdivisions to use in a call to seq that has range from 0 to the maximum pressure in argo. Finally, if a vector numerical values is provided, then it is used as is.

debug

a flag that turns on debugging. Higher values provide deeper debugging.

...

optional arguments to approx, which is used to do the gridding.

Details

The gridding is done with approx. If there is sufficient user demand, other methods may be added, by analogy to sectionGrid.

Value

An object of class "argo" that contains a pressure matrix with constant values along the first index.

Author(s)

Dan Kelley

See Also

The documentation for argo-class explains the structure of argo objects, and also outlines the other functions dealing with them.

Examples

library(oce)
data(argo)
g <- argoGrid(argo, p=seq(0, 100, 1))
par(mfrow=c(2,1))
t <- g[["time"]]
z <- -g[["pressure"]][,1]
## Set zlim because of spurious temperatures.
imagep(t, z, t(g[['temperature']]), ylim=c(-100,0), zlim=c(0,20))
imagep(t, z, t(g[['salinity']]), ylim=c(-100,0))

[Package oce version 0.9-18 Index]