Convert a data frame into an sf object — data_to

This function can be used to convert a data.frame into an sf object. Note that coordinates (columns site_lon_start_decimal and site_lat_start_decimal) are projected in the Robinson coordinate system.

Usage

data_to_sf(data)

Arguments

data: a data.frame, i.e. a FORCIS dataset or the output of a filter_*() function.

Value

An sf POINTS object.

Examples

# Attach packages ----
library("forcis")
library("ggplot2")

# 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)

# Convert to an sf object ----
net_data_sub_sf <- data_to_sf(net_data_sub)

# World basemap ----
ggplot() +
  geom_basemap() +
  geom_sf(data = net_data_sub_sf)