Plotting a 2D vector field

Hello,

probably this has already been solved, so I ask. I want to plot a 2D

vector field with coordinate axes for illustrating an ordinary

differential equation flow. I have succeeded in doing this by writing

data to an xgraph file. Now, I want to do the same by piping data to

gnuplot.

I am a newbie to gnuplot, so I did not even succeed in getting an

empty window with only coordinate axes plotted. Does anyone have

tips, or perhaps even a pointer to a solution of the whole problem?

Thank you,

Nicolas.