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Calculates GEP

Source: R/flux_gep.R
flux_gep.Rd

[Deprecated]

flux_gep was renamed flux_gpp out of consistency with the literature.

Calculate gross ecosystem production (GEP) from net ecosystem (NEE) exchange and ecosystem respiration (ER) as GEP = NEE - ER. Datetime and other variables to keep will be taken from the NEE measurement. Fluxes presents in the dataset that are neither NEE nor ER (soilR, LRC or other) are not lost.

Usage

flux_gep(
  fluxes_df,
  type_col,
  f_datetime,
  f_flux = f_flux,
  id_cols,
  nee_arg = "NEE",
  er_arg = "ER",
  cols_keep = "none"
)

Arguments

fluxes_df

a dataframe containing NEE and ER

type_col

column containing type of flux (NEE or ER)

f_datetime

column containing start of measurement as datetime

f_flux

column containing flux values

id_cols

columns used to identify each pair of ER and NEE

nee_arg

argument designating NEE fluxes in type column

er_arg

argument designating ER fluxes in type column

cols_keep

columns to keep from fluxes_df. Values from NEE row will be filled in GEP row. none (default) keeps only the columns in id_cols, flux, type and datetime columns; all keeps all the columns; can also be a vector of column names.

Value

a dataframe with $GEP = NEE - ER$ in long format with GEP, NEE, and ER as flux type, datetime, and any column specified in cols_keep. Values of datetime and columns in cols_keep for GEP row are taken from NEE measurements.