Plot arrows

Source: R/plotting.R

Add arrows to the end of contours made by the ft.contour function. Colors are taken from the 'color' column in the data.

ft.arrows(
  aggregated_data,
  xformant = 1,
  yformant = 2,
  revaxes = FALSE,
  logaxes = FALSE,
  lwd = 2,
  length = 0.1,
  add = TRUE,
  ...
)

Arguments

aggregated_data

A dataframe containing the data from an 'aggregated_data' file produced by Fast Track.
xformant

an integer indicating which formant number should be plotted on the x axis.
yformant

an integer indicating which formant number should be plotted on the y axis.
revaxes

if TRUE, axis ranges are inverted so that they go high > low.
logaxes

if TRUE, axes are logarithmic.
lwd

an integer determining arrow line width.
length

the length of the arrow lines.
add

if FALSE, a new plot if created.
...

Additional arguments are passed to the internal call of 'arrows'.

Examples

data(aggregated_data)
ft.lines (aggregated_data, xformant=2,yformant=1,revaxes=TRUE)

ft.arrows (aggregated_data, xformant=2,yformant=1,revaxes=TRUE)