Extract Tags as Columns from an OSM PBF Layer
osm_tags_df.RdExtract Tags as Columns from an OSM PBF Layer
Arguments
- data
an imported layer from an OSM PBF file. Usually has a few important tags already expanded as columns, and an 'other_tags' column which compounds less frequent tags as character strings.
character. A vector of tags to extract as columns.
- na.prop
double. Proportion of features having a tag in order to keep the column.
Value
a data.table with the supplied tags as columns, and the same number of rows as the input frame.
Examples
# See Examples at ?osmclass for full examples
# Extracting tags of interest (some of which are inside 'other_tags')
tags <- c("osm_id", "highway", "man_made", "name", "alt_name",
"description", "wikidata", "amenity", "tourism")
head(osm_tags_df(djibouti_points, tags))
#> osm_id highway man_made name alt_name description
#> <char> <char> <char> <char> <char> <char>
#> 1: 27565085 <NA> <NA> Djibouti جيبوتي <NA> <NA>
#> 2: 260937317 traffic_signals <NA> <NA> <NA> <NA>
#> 3: 265054255 traffic_signals <NA> <NA> <NA> <NA>
#> 4: 265065760 traffic_signals <NA> <NA> <NA> <NA>
#> 5: 265071403 traffic_signals <NA> <NA> <NA> <NA>
#> 6: 266529985 <NA> <NA> <NA> <NA> <NA>
#> wikidata amenity tourism
#> <char> <char> <char>
#> 1: Q3604 <NA> <NA>
#> 2: <NA> <NA> <NA>
#> 3: <NA> <NA> <NA>
#> 4: <NA> <NA> <NA>
#> 5: <NA> <NA> <NA>
#> 6: <NA> <NA> <NA>
# Only keeping tags with at least 5\% non-missing
head(osm_tags_df(djibouti_points, tags, na.prop = 0.05))
#> osm_id man_made name alt_name wikidata
#> <char> <char> <char> <char> <char>
#> 1: 27565085 <NA> Djibouti جيبوتي <NA> Q3604
#> 2: 260937317 <NA> <NA> <NA> <NA>
#> 3: 265054255 <NA> <NA> <NA> <NA>
#> 4: 265065760 <NA> <NA> <NA> <NA>
#> 5: 265071403 <NA> <NA> <NA> <NA>
#> 6: 266529985 <NA> <NA> <NA> <NA>