Thanks Roger,
your trick worked, reworking the polygon data to a raster and plotting
the file with image()
and then plotting the rest with plot(, add=TRUE) works great (see
attached code).
It shows that the famous KISS principle (keep is simple, stupid ) also
applies to plotting maps
in R
On Wed, 4 Feb 2009, Peter van Horssen wrote:
Dear all,
I have a plot problem which is related to the 'contourlines on a plot
question' from a while ago.
I have a map with 144 polygons (squares), for each square we calculate the
mean flight direction (of birds).
What I try to plot is a map
Dear all,
I have a plot problem which is related to the 'contourlines on a plot
question' from a while ago.
I have a map with 144 polygons (squares), for each square we calculate
the mean flight direction (of birds).
What I try to plot is a map with the samplesize as a
greyscale in the pol
