Create plot with ggplot2 in R

Question

I am new to ggplot2 graphics in R. I need to create a graph in the picture.

It's comparison between sensitivity and specificity for each rule. I have 20 rules for each model on average. It is easiest way to compare quality of generated rules than searching results in tables.

my input will be data frame with 3 columns: 1 character(or factor) and 2 numeric.

this is my R version and OS:

R version 3.3.1 (2016-06-21)
OS X 10.12.2 (Sierra).
ggplot2_2.1.0

Any tips would be appreciated.

I answered your question, but for the next time you should have an example dataset :D — Derek Corcoran
– Derek Corcoran, Commented Dec 26, 2016 at 13:59

Derek Corcoran · Accepted Answer · 2016-12-26 13:59:01Z

1

This is how you do it

library(ggplot2)

df<- data.frame(rule = c("rule 1", "rule 2", "rule 1"), value = c(-0.8, 0.55, 0.8), qualityMeasure = c("FPR", "TPR", "TPR"))

dat1 <- subset(df,value >= 0)
dat2 <- subset(df,value < 0)

ggplot() + geom_bar(data = dat2, stat = "identity", aes(x = rule, y = value, fill = qualityMeasure)) + geom_bar(data = dat1, stat = "identity", aes(x = rule, y = value, fill = qualityMeasure)) + coord_flip()

answered Dec 26, 2016 at 13:59

Derek Corcoran

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