Filter FORCIS data by year of sampling — filter_by

Filters FORCIS data by year of sampling.

Usage

filter_by_year(data, years)

Arguments

data: a data.frame. One obtained by read_*_data() functions.
years: a numeric containing one or several years.

Value

A data.frame containing a subset of data for the desired years.

Examples

# Attach the package ----
library("forcis")

# Import example dataset ----
file_name <- system.file(file.path("extdata", "FORCIS_net_sample.csv"), 
                         package = "forcis")

net_data <- read.table(file_name, dec = ".", sep = ";")

# Add 'data_type' column ----
net_data$"data_type" <- "Net"

# Dimensions of the data.frame ----
dim(net_data)
#> [1] 2451   77

# Filter by years ----
net_data_sub <- filter_by_year(net_data, years = 1992)

# Dimensions of the data.frame ----
dim(net_data_sub)
#> [1] 610  77