[!] waterways (rivers and water bodies) and transport networks (roads and railroads) are based on Data200 from ČÚZK instead of earlier (and by now somewhat dated) ArcČR 500 v3.3 from ARCDATA.
vignette updated to use static election result (via the Wayback Machine) instead of raw volby.cz
minimal supported versions of GDAL, GEOS and PROJ explicitly specified (PROJ being the most relevant)
structures aligned with upcoming sf / s2 release
internal bump to latest valid RÚIAN data (June 2021)
[!] result of geocode() is now standardized; the function is now guaranteed to return a sf data frame
[!] naming of the special sf geometry column is standardized to
geometry in all cases; this reverses changes introduced in
v1.5.0 with move to RÚIAN data source
volebni_okrsky(), senat_obvody() and zip_codes() functions added, based on helpful suggestions from Jakub Komárek
resolves invalid geometries of okresy, orp_polygony and chr_uzemi
resolved inconsistencies in geometries of okresy Brno město & Brno venkov
updated vignette ({czso} replaces downloaded csv files; viz of Senát added)
unit tests adjusted to decrease load on CRAN servers
union_sf removed entirely (after being deprecated in 1.6.0)
handling of remotely stored datasets amended to better align with the variety of PROJ versions supported
[!] all data objects now explicitly state the month for which the data is current
protected areas (chráněná území) based on AOPK open data instead of former ARC ČR500; the AOPK data are more current
small scale protected areas (maloplošná chráněná území) are included in output of chr_uzemi(); extra dimension to the dataset to differentiate small and large scale protected areas added. The downloaded file size increased to 7 MB.
dimension of ZUJ (základní územní jednotka) removed from obce datasets, in line with move to RÚIAN as main source of administrative units. RÚIAN does not support this metric, and it does not map easily to obce (a ZUJ is sometimes an obec, and sometimes a část).
union_sf() function is deprecated, as it has little connection to the Czech Republic; it is being moved to (so far experimental) package of spatial helper functions
dimensionality of ORP (obce s rozšířenou působností) was reduced - district / okres and shortened name were removed. This reflects the cardinality of dimensions - ORP do not map to okres 1:n, but m:n (several ORPs are spread over multiple districts, eg. Jihlava, Tanvald or Stod). Kraj was retained, as it maps 1:n (each ORP can be mapped to a single kraj).
bugfix in simplified shapefiles / kraje(“low”)
unit tests updated
url of vanity badges changed to https
[!] administrative areas based on RÚIAN generalized boundaries instead of former ARC ČR500; this results in a negligible loss of accuracy, and a significant reduction of size (and download time)
special cases of rivers object implemented for easier visualization of Prague and Brno maps
unit tests reflect recent changes in PROJ
tidyverse style guide applied
examples updated to resolve warnings
bug in union_sf() corrected
vyskopis() function added to facilitate rasters of Czech relief; dependency on {raster} introduced
dependency on {sf} changed from Imports to Depends (loading of RCzechia triggers a load of sf)
dependency on {tmap} decommissioned, vignette refactored to {ggplot2} & {leaflet} only
KFME grid cells (faunistické čtverce) object added
minor optimization of geocode() and tests
downgraded error on unavailable internet to message in line with updates to CRAN policy
internal optimization
introduced geocode and revgeo functions (via ČÚZK API)
optimization of documentation and vignette
new objects / functions added: silnice, zeleznice, chr_uzemi and lesy
updated vignette to reflect changes in tmap package (v.1.x -> v.2.0)
added function union_sf to aggregate sf data frames
corrected typos in documentation (NUTS2 vs. NUTS3 in obce)
unit tests optimized
low resolution shapefiles added for republika, kraje and okresy
internet connection not required for using lo-res shapefiles
dependency on tidyverse replaced by dplyr
[!] this is the the first CRAN version
[!] to make the package pass CRAN size requirements data files were changed from internal to external (internet connection required to load)
a development version is available on https://github.com/jlacko/RCzechia
if you have any questions or suggestions, please contact me (jindra dot lacko at gmail dot com)