Hi list,
I wonder if anyone has had this experience with squishplot() in the
TeachingDemos package.
Taking the example from the ?image help page,
library(TeachingDemos)
x <- 10*(1:nrow(volcano))
y <- 10*(1:ncol(volcano))
layout(matrix(c(1,2,3,4),ncol=2,byrow=TRUE),height=c(2,1))
## 1st plot
op <- squishplot(range(x),range(y),1)
image(x, y, volcano, col = terrain.colors(100))
par(op)
## 2nd plot
op <- squishplot(range(x),range(y),1)
image(x, y, volcano, col = terrain.colors(100))
par(op)
The second plot comes out looking as expected, but the first plot is not
squished in the desired proportions. I tried tracking the modifications to
par('pin') and par('plt') in the function but gave up midway through in desire
for haste - not sure what is going on but I did find that taking advantage of
the behavior above, calling
plot.new(); par(new=TRUE)
before the first plot makes things work as expected. So the full code would be
layout(matrix(c(1,2,3,4),ncol=2,byrow=TRUE),height=c(2,1))
## 1st plot
op <- squishplot(range(x),range(y),1)
plot.new()
par(new=TRUE)
image(x, y, volcano, col = terrain.colors(100))
par(op)
## 2nd plot
op <- squishplot(range(x),range(y),1)
image(x, y, volcano, col = terrain.colors(100))
par(op)
+++
I wonder if this behavior is not surprising? It is a great function overall
though - thanks for the contribution.
Stephen
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