add_regular_polygon_grid {quadkeyr} | R Documentation |
Add the rows needed to complete a regular QuadKey polygon grid
derived from the bounding box of the quadkey
column of a data.frame.
Description
This function estimates the bounding box of the quadkeys given in the quadkey column and adds rows to complete the quadkeys and the geometry needed to create a regular grid. All other columns for the introduced QuadKeys will be filled with NAs.
For a detailed explanation on how to use this
and other similar quadkeyr
functions,
read the the vignette:
https://docs.ropensci.org/quadkeyr/articles/quadkey_identified_data_to_raster.html
Usage
add_regular_polygon_grid(data)
Arguments
data |
A data.frame with a |
Value
A list with three elements:
-
data
Asf
POLYGON data.frame with all the QuadKeys within the bounding box of the ones provided in thequadkey
column of the input dataset, and the rest of the original variables. The columnsquadkey
andgeometry
are returned for all the grid, The values of the newly added QuadKeys will be NA for the rest of the variables. -
num_rows
The number of columns of the regular grid. -
num_cols
The number of rows of the regular grid.
Examples
# Read the file with the data
path <- paste0(
system.file("extdata", package = "quadkeyr"),
"/cityA_2020_04_15_0000.csv"
)
data <- read.csv(path)
data <- format_fb_data(data)
add_regular_polygon_grid(data = data)