This avoids the necessary use of quiet = TRUE, stringsAsFactors = FALSE, as_tibble = TRUE with st_read().
This was especially needed as it appeared that the patches element of read_habitatmap_stdized() and read_watersurfaces_hab() had all NA's in the polygon_id column when using options(stringsAsFactors = FALSE) in an R script. That's because the stringsAsFactors argument of previously used st_read() was not set, and it then takes the environment's setting. Consequence: the polygon_id of the polygons element was not automatically set as a factor, resulting in its levels being NULL .
ToonHub
commented
5 years ago
This avoids the necessary use of
quiet = TRUE, stringsAsFactors = FALSE, as_tibble = TRUEwithst_read().This was especially needed as it appeared that the patches element of
read_habitatmap_stdized()andread_watersurfaces_hab()had allNA's in thepolygon_idcolumn when usingoptions(stringsAsFactors = FALSE)in an R script. That's because thestringsAsFactorsargument of previously usedst_read()was not set, and it then takes the environment's setting. Consequence: thepolygon_idof the polygons element was not automatically set as a factor, resulting in its levels beingNULL.read_sf()appliesquiet = TRUE, stringsAsFactors = FALSE, as_tibble = TRUEby default.