Administrative regions, rivers and water bodies of the Czech Republic.
This project downloads a set of shapefiles relevant to the Czech Republic. It was inspired by the popular
tigris package for US datasets.
The shapefiles are based on ArcČR 500 (https://www.arcdata.cz/produkty/geograficka-data/arccr-500) with some adjustments:
The default resolution is 1 meter; this makes the shapefiles 1) very accurate and 2) rather large. This level of detail is not always necessary, and often not beneficial - a lower resolution shapefile is not only smaller in memory, but also smoother and more aesthetically pleasing. For the most commonly used shapes (republika, kraje and okresy) an optional low resolution version is also included. To access it specify the value of
resolution parameter as
"low" (default is
Using of the lo-res versions does not require a working internet connection. To use the high resolution (default) shapefile a working intenet connection is necessary, as the data files were too big to meet the CRAN requirements on package size and must be stored externally. Access to the external files is logged, from time to time I check the logs (mainly to understand my bandwidth charges).
Tohle je "oficiální", a tedy anglické, readme. Českou verzi naleznete na http://www.jla-data.net/cze/package-rczechia/
The package is on CRAN (as of March 2018) so to get a stable version simply run:
You can also get the latest development version by running
devtools::install_github("jlacko/RCzechia") and the last version built on
sp instead of
sf package by running
devtools::install_github("jlacko/RCzechia", ref = "v0.1.4").
All objects are implemented as functions returning data frames, so must be followed by brackets (i.e.
hranice <- republika()).