Plus and minus sign in label/title

[Jean-Louis]

Good day to all,

When running the following toy script:

df <- data.frame(x = 1, y = 1)
ggplot(df, aes(x, y)) + geom_point() +
opts(title = expression(paste("ALSFRS (",Mean%+-%SEM,") by dose Group (mg)")))

ggplot(df, aes(x, y)) + geom_point() +
opts(title = expression(paste("ALSFRS (",Mean%+-%2SEM,") by dose Group (mg)")))

the first call works but I get an error with the second

 Erreur : symbole inattendu(e) dans :
"ggplot(df, aes(x, y)) + geom_point() +
opts(title = expression(paste("ALSFRS (",Mean%+-%2SEM"

I am just trying to get "mean symbolofplusandminus 2 SEM" in my title.

Any help greatly appreciated.

Best wishes, JL

[Dennis Murphy]

Hi:

Here's one way you could do it:

ggplot(df, aes(x, y)) + geom_point() +

opts(title = expression(paste("ALSFRS (Mean" %+-% "2SEM) by dose
Group (mg)")))

Dennis

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