[SOLVED] Ignoring unknown aesthetics with geom

Ignoring unknown aesthetics with geom_rect

I am trying to do a waterfall plot like the following example:

base2 <- data.frame(rot=c("PRini","shk1","PRfim"), value=c(10,5,15),order=c(1,2,3), fim=c(10,15,0), 
                inicio=c(0,10,15), imp=c("net","pos","net"))   
ggplot(base2, aes(fill = imp)) +
geom_rect(aes(x = rot,
              xmin=order - 0.3,
              xmax=order + 0.3, 
              ymin=fim,
              ymax=inicio),
          position="dodge")

When I execute that code, I receive the following message:

Warning: Ignoring unknown aesthetics: x

If I remove the x argument, the following message is displayed:

Error: position_dodge requires the following missing aesthetics: x

When I remove the position argument, the plot is showed up, but without the x labels. I want some suggestion to remove the first warning keeping the x labels.

Solution

put all of the aesthetics in your ggplot(aes()), then you won't get a warning. The geom_rect() will get the aes from ggplot() then.

    ggplot(base2, aes(fill = imp, x = rot, xmin=order - 0.3,
+                              xmax=order + 0.3, 
+                              ymin=fim,ymax=inicio)) +
+          geom_rect( position="dodge")

another solution as dirty workaround: it seems your plot is fine, but it just gives you the warning. You also could also use suppressWarnings() for ignoring the warning.