trans_loss: Calculate number of transmitters remaining over time
In mhpob/TelemetryR: Handle VEMCO detection data.

Description Usage Arguments Details Value

trans_loss returns the number of transmitters (or other group) remaining each day of a given time period

1	trans_loss(data, dates, group, stdate = NULL, enddate = NULL)

`data`	Data frame. Detection data including date and time of detection, as well as a group identifier.
`dates`	Date- or POSIX-class. Date and time of detections.
`group`	Character. Group identifier (transmitter, fish ID, etc.).
`stdate`	Date- or POSIX-class. Which day you want the time series to start? Defaults to day of earliest detection in the data set. Must be the same class as `enddate`
`enddate`	Date- or POSIX-class.

This function finds the most-recent date of detection for each group (i.e., transmitter/fish). For each date in a given range, it then counts the number of fish that have a more-recent final detection date.

Output is a data frame containing the number of each group remaining at each date.

mhpob/TelemetryR documentation built on Sept. 28, 2020, 11:33 a.m.