Convert from matrix format to dataframe — reformat_matrix_to

Creates a dataframe out of GPS data in "matrix format" suitable for plotting with ggplot

Usage

reformat_matrix_to_df(
  xs,
  ys,
  timestamps,
  ids = NULL,
  time_indices_selected,
  id_codes_selected = NULL,
  lats = NULL,
  lons = NULL
)

xs: UTM eastings matrix (n_inds x n_times matrix where xs[i,t] gives the easting of individual i at time step t)
ys: UTM northings matrix (n_inds x n_times matrix where ys[i,t] gives the northing of individual i at time step t)
timestamps: vector of timestamps (POSIXct), must have same dimensions as columns of xs and ys matrices
ids: Dataframe of individuals with individual name stored in a column called id_code. Only necessary if you want to select a subset of individuals using id_codes_selected
time_indices_selected: Time indices for data to include in the dataframe, to be matched with xs, ys, timestamps
id_codes_selected: Identity codes of individuals to include in dataframe. If none provided, all individuals are included
lats: matrix of latitude values (n_inds x n_times)
lons: matrix of longitude values (n_inds x n_times)

Returns a dataframe of id_codes, xs, ys, and timestamps

Eli Strauss

NOT YET CODE REVIEWED