1.2 DetectionsList objects
While Detections objects represent individual receivers, an array of receivers is stored as a list of detections objects: a DetectionsList.
detlst <- DetectionsList(det_1, det_2, det_3, det_4, det_5, det_6)
plot(detlst, main = "M\u00f6rrums\u00e5n array")
mtext("CRS: WGS 84, UTM zone 33N", adj = 0)
The names of each DetectionList receiver is taken from its send_id attribute.
Even if a receiver doesn’t have a sync-tag, you should still provide a send_id as a unique identity.
DetectionsList objects give handy summary tables when evaluated.
Below we can see the number of sync-tag emission/detections within the array in addition to the detections of a tagged smolt swimming by (tag id: HR-53883 & PPM-53883).
## DetectionsList
##
## Receiver Summary
## 62041 62042 62074 62368 62581 62584
## Emissions 144 144 144 144 142 144
## Detections 651 827 677 611 765 425
## Tags Detected 7 7 7 7 7 6
##
## Detections Summary
## Tag ID First detection Last detection n Detection period (h)
## HR-53883 2021-05-08 20:41:34 2021-05-08 21:29:30 708 0.80
## 62074 2021-05-08 18:00:09 2021-05-09 05:59:56 587 12.00
## 62368 2021-05-08 18:02:21 2021-05-09 05:55:31 564 11.89
## 62584 2021-05-08 18:00:48 2021-05-09 05:52:23 548 11.86
## 62041 2021-05-08 18:01:03 2021-05-09 05:58:01 514 11.95
## 62042 2021-05-08 18:00:38 2021-05-09 05:56:37 498 11.93
## 62581 2021-05-08 18:00:42 2021-05-09 05:55:42 465 11.92
## PPM-53883 2021-05-08 20:55:51 2021-05-08 21:22:06 72 0.44You can also easily convert lists of Detections objects into DetectionsList objects.