R help - May 2010 - How to draw a graphic using data with coordinates and production rate?

Hi, assuming your production figures are in a square matrix, where points
with no production take zero and points with production take the production
figure, you could use 

image()

This is the most basic approach I would think. 

Daniel
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Oh, if plot does the thing, then you just want to specify the color argument
accordingly, where the color argument is given by your production figure.

x=seq(1:100)
y=seq(1:100)

x.coord=sample(x,100)
y.coord=sample(y,100)

production=sample(1:100, 100)

plot(y.coord~x.coord)

#now lets say we want full instead of empty points
plot(y.coord~x.coord, pch=16)

#now lets say we want the points blue

plot(y.coord~x.coord, pch=16, col="blue")

#now lets say we want them in the same blue but with saturation varying by
the production number
plot(y.coord~x.coord, pch=16, col=rgb(0,0,100,production,maxColorValue=100))

#note that you may want to have maxColorValue=max(production) (or scale the
production value accordingly)
#and that you may want to have the color value (here for blue) also at that
same value

#now lets do red instead
plot(y.coord~x.coord, pch=16, col=rgb(100,0,0,production,maxColorValue=100))

HTH,
Daniel

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