Hello,
I have two questions. I'd like to visualize data with a heatmap and I have the
following testcase:
x <- rnorm(256)
nx <- x + abs(min(x))
nnx <- 255/max(nx) * nx
x <- matrix(nnx, 16, 16)
rownames(x) <-
c("A","B","C","D","E","F","G","I","H","J","K","L","M","N","O","P")
par(fin=c(8.0,8.0))
cp <- colorRampPalette(c("white","springgreen","darkgreen"),space="Lab")
heatmap(x, Rowv = NA, Colv = NA, scale="none", col=cp(200))
I defined the figure region to make sure that each position is a square. But
with these settings I get the following output (though it looks nice):
> x <- rnorm(256)
> nx <- x + abs(min(x))
> nnx <- 255/max(nx) * nx
> x <- matrix(nnx, 16, 16)
> rownames(x) <-
c("A","B","C","D","E","F","G","I","H","J","K","L","M","N","O","P")
> par(fin=c(8.0,8.0))
> cp <- colorRampPalette(c("white","springgreen","darkgreen"),space="Lab")
> heatmap(x, Rowv = NA, Colv = NA, scale="none", col=cp(200))
Fehler in par(op) : ungültiger Wert für den Grafikparameter "fig"
spezifiziert
> par(fin=c(8.0,8.0))
> cp <- colorRampPalette(c("white","springgreen","darkgreen"),space="Lab")
> heatmap(x, Rowv = NA, Colv = NA, scale="none", col=cp(200))
Fehler in par(op) : ungültiger Wert für den Grafikparameter "fig"
spezifiziert
> par()$fig
[1] 7.267443e-04 1.305448e-02 -2.862294e-17 9.876543e-01
> par()$fin
[1] 0.08834875 7.06790021
Why do I get this error? Why does the parameters have these strange values
(though I set the fin parameter before...)
And another question concerning the heatmap: May I force the funtion to plot A1
at the upper left corner instead of the lower left?
I'll be glad about any idea how to solve these problems...
Ciao,
Antje
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