A new set of ID levels can be created by separating those given based on a minimum gap in another set of data. This is useful for separating instruments identified only by their ID into separate events in time.
sepIdGaps(id, gapdata, minGap = 3600 * 24 * 7)
| id | existing ID levels |
|---|---|
| gapdata | data matching |
| minGap | the minimum "gap" to use in gapdata to create a new ID level |
A new set of ID levels, named following the pattern that "ID" split into 3 would provided "ID", "ID\_2" and "ID\_3".
The assumption is that a week is a long time for a tag not to record anything.
It is assumed that each vector provides is sorted by gapdata within
id. No checking is done, and so it is suggested that this only be
used on ID columns within existing, validated trip objects.
id <- gl(2, 8) gd <- Sys.time() + 1:16 gd[c(4:6, 12:16)] <- gd[c(4:6, 12:16)] + 10000 sepIdGaps(id, gd, 1000)#> [1] "1" "1" "1" "1_2" "1_2" "1_2" "1_2" "1_2" "2" "2" "2" "2_2" #> [13] "2_2" "2_2" "2_2" "2_2"