'FID' special field is driver-dependent, and may be either 0-based (e.g. 'ExecuteSQL' on the GDAL/OGR data set and will result in the creation of a In case of problems reading shapefiles from USB drives on OSX, please seeįor query with a character dsn the query text is handed to Lead to spurious errors that accompanying *.shp are missing. Note that stray files in data source directories (such as *.dbf) may promote_to_multi is handled on a per-geometry columnīasis type may be specified for each geometry column. Other way around (type=3), secondary rings from MULTIPOLYGONS may be dropped Typical conversion from POLYGON (3) to MULTIPOLYGON (6) should work the Note that not every target value may lead to successful conversion. Logical is the WKB of type EWKB? if missing, defaults to Logical should the returned table be of class tibble or ame? EWKB
#Trim layer head dragonframe 4 driver
Logical if TRUE, polygon ring directions are checkedĪnd if necessary corrected (when seen from above: exterior ring counterĬlockwise, holes clockwise) fid_column_nameĬharacter name of column to write feature IDs to defaults to not doing this driversĬharacter limited set of driver short names to be tried (default: try all) wkt_filterĬharacter WKT representation of a spatial filter (may be used as bounding box, selecting overlapping geometries) see examples as_tibble Precision is lost (i.e., values are larger than 2^53). String if FALSE, they are returned as double and a warning is given when Logical if TRUE, Int64 attributes are returned as Logical logical: should character vectors beĬonverted to factors? Default for read_sf or R version >= 4.1.0 isįALSE, for st_read and R version < 4.1.0 equal toĭefault.stringsAsFactors() int64_as_string Of LineString and MultiLineString, or of Polygon and MultiPolygon, convertĪll to the Multi variety defaults to TRUE stringsAsFactors Logical in case of a mix of Point and MultiPoint, or A vector with different values for each geometry column If left zero, and promote_to_multi is TRUE, in case of mixedįeature geometry types, conversion to the highest numeric type value found
#Trim layer head dragonframe 4 iso
Integer ISO number of desired simple feature type see details. Integer or character in case of multiple geometry Reference, or signaling no or multiple layers geometry_column Logical suppress info on name, driver, size and spatial Of the GDAL documentation of the corresponding driver, and For possible values, see the "Open options" section SQL query to select records see details optionsĬharacter driver dependent dataset open options, multiple It is also possible to omit layer and rather Layer can be a table name or a database identifier (see Print a message when there are multiple layers, or give an error if thereĪre no layers in dsn. Layer name (varies by driver, may be a file name withoutĮxtension) in case layer is missing, st_read will read theįirst layer of dsn, give a warning and (unless quiet = TRUE) It canĪlso be an open database connection. The name and access credentials of a database) in case of GeoJSON,ĭsn may be the character string holding the geojson data. Data source name (interpretation varies by driver - for someĭrivers, dsn is a file name, but may also be a folder, or contain