#  This data records the values of the L2 norm of the difference between
#  flow quantities at a variety of grids and the finest grid which we
#  take to be the exact solution.
#
#  From theory, U and V should have an O(H^2) error behavior, and P should
#  have an O(H) behavior.
#
set terminal postscript landscape color
set key
plot "dif.dat" using 1:2 title "L2(U error)" with linespoints
plot "dif.dat" using 1:3 title "L2(V error)" with linespoints
plot "dif.dat" using 1:4 title "L2(P error)" with linespoints
set logscale xy
plot "dif.dat" using 1:2 title "LogLog L2(U error)" with linespoints
plot "dif.dat" using 1:3 title "LogLog L2(V error)" with linespoints
plot "dif.dat" using 1:4 title "LogLog L2(P error)" with linespoints