ncdim_def: Define a netCDF Dimension for 'ncwrite'

In rpkgs/nctools: Tools tidy nc files

Define a netCDF Dimension for ncwrite

Description

Define a netCDF Dimension for ncwrite

Usage

ncdim_def_lonlat(lons, lats, dates = NULL, ...)

ncdim_def_time(dates = NULL)

ncdim_def_range(
  dim,
  range = c(-180, 180, -90, 90),
  dates = NULL,
  calendar = "gregorian",
  date_origin = "1970-01-01",
  by = "month"
)

Arguments

dates	PCICt, Date or Date string object. The default origin is '1970-01-01'
...	ignored parameters
dim	dimension of nc.array, ⁠[nlon, nlat, ntime]⁠
range	⁠[lon_min, lon_max, lat_min, lat_max]⁠
calendar	Calendar types include 360 day calendars("360_day", "360"), 365 day calendars ("365_day", "365", "noleap"), and Gregorian calendars ("gregorian", "proleptic_gregorian").

Examples

## 1. define time dimension
dates = seq(as.Date("2010-01-01"), as.Date("2010-12-01"), by = "month")
dates_str = format(dates)

# both of `date` or `string` all work
t1 = ncdim_def_time(dates)
t2 = ncdim_def_time(dates_str)
str(t1)
all.equal(t1, t2)

## 2. define by range
dim  = c(360, 180, 12)
dims_2 = ncdim_def_range(dim) %>% str()

## 3. define by lat and lon
dims_3 = ncdim_def_lonlat(-180:180, -90:90) %>% str()


library(rgdal)
file = "H:/global_WB/ET/diagnosed_PML/v017/PMLV2_yearly_v17_ERA5L_2005-01-01.nc"

rpkgs/nctools documentation built on Sept. 24, 2023, 9:23 p.m.