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Extract or Assign Trackframe coordinates

Source: R/accessor.R
tf_coords.Rd

This function retrieves the easting values from a trackframe object. The trackframe has a data frame-like structure with an attribute specifying the column containing easting values.

Usage

easting(tf)

easting(tf) <- value

northing(tf)

northing(tf) <- value

Arguments

tf

A trackframe object containing the tracking data. Must have an attribute indicating the easting column (easting).

value

numeric vector of new coordinate values

Value

A vector of easting or northing values extracted from the trackframe.

Examples

easting(tf_mini)
#>  [1] 16.37250 16.37334 16.37334 16.37319 16.37328 16.37250 16.37250 16.37250
#>  [9] 16.37231 16.37250 16.37313

easting(tf_mini) <- -easting(tf_mini)
northing(tf_mini)
#>  [1] 48.20835 48.20891 48.20891 48.20820 48.20852 48.20835 48.20835 48.20835
#>  [9] 48.20921 48.20835 48.20935

northing(tf_mini) <- northing(tf_mini)*5