metadata-class: Store metadata relevant to a load model.
In McDowellLab/loadflex: Models and Tools for Watershed Flux Estimates

Description Slots

metadata objects store metadata for a load model of any type (e.g., loadModel, loadInterp, loadReg2, or loadComp). See an example object at data(eg_metadata). Metadata can be created and modified by calls to metadata or updateMetadata. Values and relevant information can be accessed by getCol, getUnits, or getInfo.

constituent: character. The name of the data.frame column describing the concentration of the solute or material to be modeled.
consti.name: character. Consituent long name, for use in plots and reports
flow: character. The name of the data.frame column describing flow (discharge)
load.rate: character. The name of the data.frame column, if it exists, describing instantaneous load
dates: character. The name of the data.frame column describing date and/or time
flow.units: character. The units in which flow is both input and exported.
conc.units: character. The units in which concentration is both input and exported.
load.units: character. The units in which load (flux) is both input and exported.
load.rate.units: character. The units in which load (flux) is reported by predict.loadModel().
station: deprecated. character. A description of the sampling station or site. It's now recommended to use site.name and/or site.id instead.
site.name: character. A description of the station or site where the concentration of the constituent was measured. This slot or site.id is a better place for a site identifier than the station slot, which is deprecated.
site.id: character Station ID for the site where the concentration of the constituent was measured.
lat: numeric Station latitude where concentration (and possibly also discharge) was measured.
lon: numeric Station longitude where concentration (and possibly also discharge) was measured.
basin.area: numeric Area of the drainage basin contributing water to the site where concentrations were measured.
flow.site.name: character Long name of the station where flow was monitored, if different from where concentration was monitored (as in site.name).
flow.site.id: character Station ID of the station where flow was monitored, if different from where concentration was monitored (as in site.id).
flow.lat: numeric Latitude of the station where flow was monitored, if different from where concentration was monitored (as in site.lat).
flow.lon: numeric Longitude of the station where flow was monitored, if different from where concentration was monitored (as in site.lon).
flow.basin.area: numeric Area of the drainage basin contributing water to the site where flow was monitored, if different from where concentration was monitored (as in basin.area).
basin.area.units: character Units of the values in basin.area and flow.basin.area (must be the same for both). Basin areas are used to compute yields as loads per contributing (basin) area.
custom: ANY. Empty by default, but may be modified to store any additional data the user wants to track.