% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/RCzechia.R
\docType{package}
\name{RCzechia-package}
\alias{RCzechia-package}
\title{RCzechia: Spatial Objects of the Czech Republic}
\description{
A selection of spatial objects relevant to the Czech Republic. Due to CRAN
package size requirements (5 MB) the objects are stored externally (on Amazon
S3) - and therefore could not be implemented as datasets. They are functions
returning data frames instead.
}
\details{
To save time (and bandwidth) the downloaded objects are saved locally in
`tempdir` directory when requested, and downloaded at most once \emph{per R
session}; out of respect to CRAN Repository Policy a more permanent caching
on user's side is not attempted.

This means that:
\itemize{
  \item a working internet connection is required to use the full resolution objects
  \item all objects need to be called with (possibly empty) braces
}

For the most frequently used objects - \strong{republika}, \strong{kraje} and
\strong{okresy} - a low resolution version is also implemented. The low
resolution data sets are stored locally (and working intenet connection is
not necessary to use them).

All objects are implemented as \code{sf} data frames.
}
\section{Administrative regions}{

\itemize{
  \item republika - borders of the Czech Republic
  \item kraje - regions / NUTS3 units
  \item okresy - districts / LAU1 units
  \item orp_polygony - municipalities with extended powers (obce s rozšířenou působností)
  \item obce_polygony - municipalities as polygons
  \item obce_body - municipalities as centroids (points)
  \item casti - city districts (for cities that implement them)
}
}

\section{Natural objects}{

\itemize{
  \item reky - rivers
  \item plochy - water bodies
  \item lesy - woodland areas (more than 30 ha in area)
}
}

\section{Other objects}{

\itemize{
  \item silnice - roads
  \item zeleznice - railoads
  \item KFME_grid - grid cells (faunistické čtverce) according to Kartierung
  der Flora Mitteleuropas methodology
}
}

\section{Utility functions}{

In addition three utility functions are implemented to support spatial
workflow:

\itemize{
  \item union_sf - merging polygons based on a key value
  \item geocode - geocoding (from address to coordinates)
  \item revgeo - reverse gecoding (from coordinates to address)
}
}

