RelativeWaterDeficit {pvcurveanalysis}

Relative Water Deficit (RWD)

Description

Calculates relative water deficit (%)

Usage

RelativeWaterDeficit(
  data,
  fresh.mass = "fresh.mass",
  dry.mass = "dry.mass",
  fresh.mass.saturated = "fresh.mass.saturated"
)

Arguments

data

data frame with columns of equal length containing at least columns with the fresh mass (g), the dry mass (g) and the saturated fresh mass (g)

fresh.mass

optional name of the column in data containing the numeric fresh mass values (g); default: fresh.mass

dry.mass

optional name of the column in data containing the numeric dry mass values (g); default: dry.mass

fresh.mass.saturated

optional name of the column in data containing the numeric saturated fresh mass values (g); default: fresh.mass.saturated

Details

Relative water deficit (%) is calculated as:

RWD = 100 - 100 * ((FM - DM) (FMs - DM)^-1)

whereas FM = fresh mass, DM = dry mass and FMs = fresh mass at water saturation.

Value

the original data frame extended by a numeric column with the relative water deficit (RWD) (%).

Examples

# get example data
df <- pressure_volume_data

# extend df by RWD
df_with_RWD <- RelativeWaterDeficit(df)