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"
Value
the original data frame extended by a numeric column with the relative water content (RWC) (%).
Details
Relative water content (%) is calculated as:
$$RWC = 100 * ((FM - DM) (FMs - DM)^-1)$$
whereas FM = fresh mass, DM = dry mass and FMs = fresh mass at water saturation.