On 2011-01-28 06:09, Uwe Ligges wrote:
On 28.01.2011 14:21, pdb wrote:
In a boxplot - how can I prevent groups where the number of cases is less
than a set threshold from being plotted.
set.seed(42)
DF<- data.frame(type=sample(LETTERS[1:5], 100, replace=TRUE),
cost=rnorm(100))
count<- boxplot(cost ~ type, data=DF, plot = 0)
count$n
## how to only include plots where count$n> 18
boxplot(cost ~ type, data=DF)
Thanks in advance for any solutions.
set.seed(42)
DF<- data.frame(type = sample(LETTERS[1:5], 100, replace=TRUE),
cost = rnorm(100))
count<- boxplot(cost ~ type, data=DF, plot = 0)
for(i in c(1,3)) count[[i]]<- count[[i]][,count$n> 18]
for(i in c(6,2)) count[[i]]<- count[[i]][count$n> 18]
bxp(count)
Uwe Ligges
Here's another way:
count <- c(table(DF$type))
DF1 <- subset(DF, type %in% levels(type)[count > 18])
boxplot(cost ~ type, DF1)
boxplot(cost ~ type, droplevels(DF1))
Peter Ehlers
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