parGrad: Calculating gradients

In herrmannrobert/VerDi: Modelling the vertical distribution of aquatic organisms

Description

Function calculates in which direction and at what rate a certain parameter changes over depth.

Usage

parGrad(depth, par, range = 5)

Arguments

depth	numeric vector of depth indication.
par	numeric vector of single environmental parameter (e.g. water temperature).
range	numeric integer indicating the range for which the delta should be calculated, Default: 5.

Examples

#Generating customized temperature and salinity profile
hydro <- HydroGen(data.frame(temp = c(17,10,6,8,9),
                             salt = c(7,8,9,18,20)),
                             by = 25)
                                
#Calculating salinity and temperature gradient on a 3-meter-range
hydro$tempGrad <- parGrad(depth = seq_along(hydro$temp), par = hydro$temp, range = 3)
hydro$saltGrad <- parGrad(depth = seq_along(hydro$salt), par = hydro$salt, range = 3)

head(hydro, 15)

herrmannrobert/VerDi documentation built on June 10, 2019, 7:32 a.m.