Dear R List, Is there a function to plot vector fields in R? I'm looking for something similar to PlotVectorField in Mathematica (see below), e.g. given functions f(x) and f(y), I would like to plot the resulting field of vectors (f(x),f(y)) over some range of x and y. PlotVectorField[{f(x), f(y)}, {x, xmin, xmax}, {y, ymin, ymax}] Thanks for your help, Brian