nc_vertmean: Calculate vertical mean from a netcdf file.
In r4ecology/rcdo: Tools to manipulate netcdf data

Description Usage Arguments Value Examples

This function allows you to remap a netcdf horizontally and vertically to a specific latlon box. It outputs a data frame with the mean value and the maximum depth used for the calculation.

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nc_vertmean(ff, vars = NULL, vert_scale = NULL, coords = NULL,
  expr = NULL, na_value = NULL, out_file = NULL, zip_file = FALSE,
  cdo_output = FALSE, overwrite = FALSE, ...)

`ff`	This is the file to analyze.
`vars`	Select the variables you want to regrid. If this is not given, all variables will be regridded.
`vert_scale`	This is the vertical scale you want. c(min_depth, max_depth, vertical_resolution).
`coords`	A 2 column matrix or data frame of the form (longitude, latitude) with coordinates for regridding. This can be regular or irregular. The function will calculate which it is.
`expr`	This is a cdo expression to apply to the data before a vertical mean is calculated.
`na_value`	This is a value in the raw netcdf file that needs to be treated as an na.
`out_file`	The name of the file output. If this is not stated, a data frame will be the output.
`zip_file`	Do you want any output file to be zipped to save space. Default is FALSE.
`cdo_output`	set to TRUE if you want to see the cdo output
`overwrite`	Do you want to overwrite out_file if it exists? Defaults to FALSE
`...`	Additional terms to be sent to nc_remap2

data frame or netcdf file.

# Calculating vertical mean NOAA world ocean atlas data to the region around the UK
ff <- system.file("extdata", "woa18_decav_t01_01.nc", package = "rcdo")
# calculate vertical mean of temperature between 5 and 30 m, using a resolution of 5 for vertical interpolation
nc_vertmean(ff, vars = "t_an", vert_scale = c(5, 30, 5))