NDC/jshipman wrote:
Hi,
I am new to R plot. I am trying to scale my y axis in log. When I
do this I receive the following error
Error in axis(side = side, at = at, labels = labels, ...) :
CreateAtVector [log-axis()]: axp[0] = 0 < 0!
In addition: Warning messages:
1: In plot.window(...) :
nonfinite axis limits [GScale(-inf,1.31772,2, .); log=1]
2: In axis(side = side, at = at, labels = labels, ...) :
CreateAtVector "log"(from axis()): axp[0] = 0 !
My code is as follows:
foundOr <- read.table("yahoos_f.txt", sep="," , header=T)
if (max(foundOr$s_) >= max(notFoundOr$s_)) maxY = log(max(foundOr$s_))
else maxY = log(max(notFoundOr$s_))
jpeg('clusterYS_.jpg', quality = 100, bg = "white", res = 200, width =
2000, height = 2000 )
plot(foundOr$uid, foundOr$s_, xlab="uid", ylab="Log Search Results",
main="uid vs Search", pch=20, col="blue", log = "y", xlim=c(0,300),
ylim=c(0,maxY))
dev.off()
If I remove the log = "y" everything works fine. Am I using the log
call incorrectly? Any help would be appreciated.
It appears that we cannot set ylim if log="y" is also set. This works:
> foundOr <- read.table("yahoos_f.txt", sep="," , header=T)
> plot(foundOr$uid, foundOr$s_, xlab="uid", ylab="Log Search Results",
main="uid vs Search", pch=20, col="blue", log = "y", xlim=c(0,300))
but not this:
> plot(foundOr$uid, foundOr$s_, xlab="uid", ylab="Log Search Results",
main="uid vs Search", pch=20, col="blue", log = "y", xlim=c(0,300),
ylim=c(0,200))
Again, this works:
> plot(foundOr$uid, foundOr$s_, xlab="uid", ylab="Log Search Results",
main="uid vs Search", pch=20, col="blue", log = "xy")
but not this:
> plot(foundOr$uid, foundOr$s_, xlab="uid", ylab="Log Search Results",
main="uid vs Search", pch=20, col="blue", log = "xy", xlim=c(0,3000))
From traceback(), the crash occurs in the .Internal() part of axis(). I
am not sure why this occurs either.
Vik
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