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Extract pixel surface area data from a NetCDF file downloaded by FjordLight.

flget_area.Rd

This functions will conveniently extract the pixel surface area data stored within a NetCDF file downloaded via fl_DownloadFjord. The user may choose to load the data in either raster or data.frame formats. It is useful to combine these data with others, e.g. bathymetry data loaded via fl_DownloadFjord

Usage

flget_area(fjord, mode = "raster")

Arguments

fjord

Expects the object loaded via fl_LoadFjord.

mode

Determines the format to be loaded into the R environment. The default "raster" will load the data as a raster format. "3col" will load the data as a data.frame with three columns.

Value

Depending on which arguments the user chooses, this function will return the surface area data as a RasterLayer (mode = "raster") or data.frame (mode = "df"). The data.frame will contain the following columns:

longitude

degree decimals

latitude

degree decimals

PixelArea_km2

the surface area of the grid cell [km^2]

Author

Bernard Gentili & Robert Schlegel

Examples

# Load data
fjord_code <- "test"
fjorddata <- fl_LoadFjord(fjord_code, dirdata = system.file("extdata", package = "FjordLight"))

# Load area data
area <- flget_area(fjorddata, mode = "df")