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This is my code: 

before<-filter(data,Period == "Before")

b4 <- summarySE(before, measurevar="count", groupvars=c("Stream","Year"))

ggplot(b4, aes(x=Year, y=count, colour=Stream)) + geom_errorbar(aes(ymin=count-se, ymax=count+se)) +geom_line() +geom_point()

I keep getting the errors and the graph looks super sloppy enter image description here

Warning messages:

1: Removed 2 row(s) containing missing values (geom_path).

2: Removed 5 rows containing missing values (geom_point).

the data is from 1-100, changing the period at 51 from before to after

enter image description here

Phil
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Cindy
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  • Hi please provide a reproducible example (see https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example and https://stackoverflow.com/help/minimal-reproducible-example) its very hard to help if we don't know what `before` is – Sarah May 04 '20 at 23:18
  • Add `facet_wrap(vars(Stream))` as another layer. – Phil May 05 '20 at 02:34

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