R graphs without bar

Question

[Parham]

Hi, does anybody know why my R plots graphs without the bar?

I also get the following error:

Error : Mapping a variable to y and also using stat="bin".
  With stat="bin", it will attempt to set the y value to the count of cases in each group.
  This can result in unexpected behavior and will not be allowed in a future version of ggplot2.
  If you want y to represent counts of cases, use stat="bin" and don't map a variable to y
  If you want y to represent values in the data, use stat="identity".
  See ?geom_bar for examples. (Defunct; last used in version 0.9.2)

[David W]

To get a better answer, you should provide the code that is throwing this error. In this case it seems like the error message is telling you what to do: read ?geom_bar and decide if stat should be identity or bin (in which case you shouldn't set a y-value)

Answer 1

[David Fredman]

Not quite Bioinformatics specific, this question. See here for a nice explanation (bar plot vs histogram, and the necessary inputs)

[Parham]

Thanks, but it doesn't help. I don't understand what should I do!