Set only lower limit limit for ggplot

Question

Is it possible to set the lower limit of the limit for continuous scale? I want to make all my graphs 0 without having to specify an upper limit.

eg.

+ scale_y_continuous(minlim=0) 

Answer 1

You can use expand_limits

 ggplot(mtcars, aes(wt, mpg)) + geom_point() + expand_limits(y=0) 

Here is a comparison of the two:

• without expand_limits

• with expand_limits

Starting from version 1.0.0 of ggplot2 , you can specify only one limit and have another, as was usually determined by setting the second limit to NA . This approach will allow both the expansion and truncation of the range of axes.

 ggplot(mtcars, aes(wt, mpg)) + geom_point() + scale_y_continuous(limits = c(0, NA)) 

asking it with ylim(c(0, NA)) gives an identical digit.

Answer 2

How about using aes(ymin=0) , as in:

 ggplot(mtcars, aes(wt, mpg)) + geom_point() + aes(ymin=0) 

Answer 3

I do not think you can do this directly. But as a workaround, you can imitate how ggplot2 defines the upper limit:

 scale_y_continuous(limits=c(0, max(mydata$y) * 1.1))