Plot chosen coefficients of frequenct domain operator. Draws all pairs \( \{ (i,j) | i \in x, j\in y \).
# S3 method for freqdom
plot(x, xcoef = NULL, ycoef = NULL, type = "cartesian",
...)
Frequency domain object
vector of horizontal coefficients to plot
vector of vertical coefficients to plot
'cartesian' or 'polar' coordinates
other parameters to plot