Isolate outlying stations

Identify stations that are more than d distance in miles, defaulting to 0.5, away from the theoretical coordinate.

Usage

gpsOutlier(df, d = 0.5, returnAll = F)

Arguments

df

A dataframe with 6 required columns: date, station, legend, layer, lat, and lon. See plotGPS for details.

d

Miles threshold to call a coordinate outlying. This distance is measured as the crow flies.

returnAll

Logical, to return all rows or not. Defaults to F, returning only the outlying points

Value

A data frame with all outlying coordinates.

Examples

if (FALSE) { # \dontrun{
df <- data.frame(date = 2023,
station = c(508, 513, 520, 801, 801),
legend = c(rep("Theoretical", 4), "StartTow"),
layer = c(rep("Theoretical", 4), "13"),
lat = c(38.04717, 38.05886, 38.03217, 38.04369, 38.05500),
lon = c(-121.9172, -121.8677, -121.8631, -121.8440, -121.8487))

gpsOutlier(df, d = 0.5)
} # }