[R] levelplot question
niederlein-rstat at yahoo.de
Mon May 4 13:35:57 CEST 2009
I have a question concerning the behaviour of the colouring with levelplot. (I
hope, I manage to explain)
If I give the parameters "at" and "col.regions" like this:
at <- c(1,2,3,4,5,6)
col.regions <- c("blue","blue","blue","yellow","yellow","yellow")
Which color would have the value 3.5?
I would have expected yellow, no?
In my more complex example I wanted to create a heatmap (like yellow to red) up
to a fixed threshold. All values above should get another color (like blue).
Automatically, I generated both vectors like this:
at <- c(vectorOfLowerValues, myThreshold, vectorOfHigherValues)
col.regions <- c(vectorOfHeatmapColors, lastHeatmapColor, vectorOfColor"blue")
But I get some values above the threshold which are not blue... Can anybody
explain me why? (I've checked the length of both vectors and it's parts - this
is correct - so 'myThreshold' would get 'lastHeatmapColor' by the same vector
I'm very confused...
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