cal_mean: Calculate the mean of the nearest N stations

In hxfan1227/cmdcr: Download and process the data from China Meteorological Data Service Center (CMDC)

Description

Calculate the mean of the nearest N stations

Usage

cal_mean(id, dt, N = 5, BYcols = c("Year", "Month", "Day"), ...)

Arguments

id	The ID of the desired station
dt	A data.table of observation data. Typically, it should contain the columns including ID, Year, Month and Day.
N	A integer indicating how many stations to be used.
BYcols	A character vector of column names: e.g., DT[, sum(a), by=c("x", "y")].
...	Other arguments passed to data.table.

Value

A data.table with missing value filled for the disired station.

hxfan1227/cmdcr documentation built on Sept. 13, 2020, 12:14 a.m.