CODEWITHSUNDEEP
rggplot2
Michael Kozak
Michael Kozak

Reputation: 99

Keep same scale in different graphs ggplot2

I want to create 3 graphs in ggplot2 as follows: 

ggplot(observbest,aes(x=factor(iteration),y=bottles,colour=Team ,group=Team)) + geom_line() + scale_colour_gradientn(colours=rainbow(16)) 
ggplot(observmedium,aes(x=factor(iteration),y=bottles,colour=Team ,group=Team)) + geom_line() + scale_colour_gradientn(colours=rainbow(16))
ggplot(observweak,aes(x=factor(iteration),y=bottles,colour=Team ,group=Team)) + geom_line() + scale_colour_gradientn(colours=rainbow(16))

That is, three graphs displaying the same thing but for difference dataset each time. I want to compare between them, therefore I want their y axis to be fixed to the same scale with the same margins on all graphs, something the currently doesn't happen automatically.

Any suggestion?

Thanks

Upvotes: 2

Views: 4695

Answers (3)

Alex Woolford
Alex Woolford

Reputation: 4563

It sounds like a facet_wrap on all the observations, combined into a single dataframe, might be what you're looking for. E.g. 

library(plyr)
library(ggplot2)

observ <- rbind(
  mutate(observbest, category = "best"),
  mutate(observmedium, category = "medium"),
  mutate(observweak, category = "weak")
)

qplot(iteration, bottles, data = observ, geom = "line") + facet_wrap(~category)

enter image description here

Upvotes: 4

scoa
scoa

Reputation: 19867

Add + ylim(min_value,max_value) to each graph.

Another option would be to merge the three datasets with an id variable identifying which value is in which dataset, and then plot the three of them together, differentiating them by linetype for instance.

Upvotes: 2

figurine
figurine

Reputation: 756

Use scale_y_continuous to define the y axis for each graph and make them all easily comparable.

Upvotes: 1

Related Questions