updated manual files

man/osem_clear_cache.Rd

@@ -17,11 +17,12 @@ Boolean whether the deletion was successful
 Purge cached responses from the given cache directory
 }
 \examples{
-\donttest{
+\dontrun{
   osem_boxes(cache = tempdir())
   osem_clear_cache()
 
   cachedir = paste(getwd(), 'osemcache', sep = '/')
+  dir.create(file.path(cachedir), showWarnings = FALSE)
   osem_boxes(cache = cachedir)
   osem_clear_cache(cachedir)
 }

man/osem_measurements.Rd

@@ -115,6 +115,7 @@ a bounding box spanning the whole world.
   # construct a bounding box 12km around berlin using the sf package,
   # and get measurements from stations within that box
   library(sf)
+  library(units)
   bbox2 = st_point(c(13.4034, 52.5120)) \%>\%
     st_sfc(crs = 4326) \%>\%
     st_transform(3857) \%>\% # allow setting a buffer in meters

man/osem_measurements_archive.Rd

@@ -36,7 +36,7 @@ A \code{tbl_df} containing observations of all selected sensors for each time st
 \description{
 This function is significantly faster than \code{\link{osem_measurements}} for large
 time-frames, as daily CSV dumps for each sensor from
-\href{http://archive.opensensemap.org}{archive.opensensemap.org} are used.
+\href{https://archive.opensensemap.org}{archive.opensensemap.org} are used.
 Note that the latest data available is from the previous day.
 }
 \details{