Nikos Alexandris pisze:
Hi all!
I started playing around with R and GRASS-maps.
I've a couple or raster maps (MODIS bands) in R and what I am trying to
achieve is to get density plots superimposed in one graph (for the sake
of easy visual comparison).
The only function that I have found and is able to perform this is
"sm.density.compare" ( belongs to the "sm" package). Although this
function works with *other* small (in terms of number of rows) examples,
for my MODIS bands (~87.000 rows each) I get an empty graph.
Any pointers for this "comparison" task?
Thank you, Nikos
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Hi
simply use density function with the same bandwith=, from=, to= for each
raster and next use lines to add curves for vuisual comparing
for example:
plot(density(bronze$a_slope,bw=0.1,from=0, to=12), col=2)
lines(density(neolitic$a_slope,bw=0.1,from=0, to=12), col=1)
Jarek
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