rolldfapply: Wrapper for 'rollapply'

In ecor/ncdf4df: ncdf4df

Description

Function rollapply applied to a Data Frame structured as follows: Time,Station,Variable,Value

Usage

rolldfapply(data, TimeField = "Time", ValueField = "value",
  align = "right", ...)

Arguments

data	data frame
TimeField	character string containg time field of data
ValueField	character string containg time field of data
align	argument of rollapply. Default value is here set to right.
...	arguments for rollapply

Value

A data frame with the same format of data with "rolled" calculated values.

See Also

rollapply

Examples

library(ncdf4df)
## ncname <- "/Users/ecor/Dropbox/iasma/RMAWGENdev/ncdf4df/inst/trentino/data/trentino_hourlyweatherdata.nc"
ncname <- system.file("trentino/data/trentino_hourlyweatherdata.nc",package="ncdf4df")
nc <- nc_open(ncname)
meteoPrec <- ncvar_get_df_values(nc=nc,x="Prec",verbose=TRUE)

nc_close(nc)

width <- 3 ## rolling windows of 3 time inidices, e.g. hour
meteoPrec3h <-  rolldfapply(data=meteoPrec,width=width,FUN=sum,align="right") ## l

ecor/ncdf4df documentation built on May 15, 2019, 10:06 p.m.