speed_filter: Apply a speed filter to each deployment in the Argos dataset
In us-amlr/amlrgos: Processing AERD Argos Data

View source: R/speed_filter.R

speed_filter

R Documentation

Apply a speed filter to each deployment in the Argos dataset

Description

Apply a speed filter to each deployment in the Argos dataset

Usage

speed_filter(tag.data, ptt.table, deployments)

Arguments

`tag.data`	data frame; the raw(ish) data from the ARGOS download
`ptt.table`	data frame; file specified by `log.file` in `import_argos`
`deployments`	character; the unique deployment codes

Details

This function uses the R package argosfilter to filter the speeds for each tag sdafilter removes Z codes and keeps all other positions that meet a threshold speed criteria set in the function call, but note that it requires 5 or more points to run. Tracks with fewer than five points will be set to NA.

Note that this function will mark points as 'to remove' if sdafilter returns 'end_location'. See the Value section of sdafilter for more details.