How to get rid of "Error: Mapping should be created with `aes()` or `aes_()`."

[Ttaheri]

I am trying to plot some figures using ggplot function but it keeps giving me this error and it is driving me crazy. I have checked my spelling and paranthesize. They are not the problem. Please see the below code and tell me what the problem is!!

 brfss2013 %>%
+     group_by(fmonth) %>%
+     summarise(mean_dv=mean(drvisits, na.rm=TRUE)) %>%
+     arrange(desc(mean_dv))
      ggplot(brfss2013, aes(x=factor(fmonth), y=mean_dv)) + geom_boxplot()

[nirgrahamuk]

@Ttaheri

 brfss2013 %>%
+     group_by(fmonth) %>%
+     summarise(mean_dv=mean(drvisits, na.rm=TRUE)) %>%
+     arrange(desc(mean_dv))

one problem may be that you do work to manipulate brfss2013 , but don't assign the result to any name so it is not available for future steps. I would guess mean_dv is therefore not there. but I would expect you to have a different error than the one shown.

The error shown might simply be a namespace confusion.
do

getAnywhere(aes)

This should show where aes is coming from which should be only

A single object matching ‘aes’ was found
It was found in the following places
  package:ggplot2
  namespace:ggplot2

if you have other things in there, thats your problem.
restart your rsession and load only the tidyverse and try again.

[Ttaheri]

Thank you for your response.
I did getAnywhere(aes) and it gave me the answer you mentioned. "A single object ...".
Regarding assigning results to names I changed the code to

drvisits2013 <- brfss2013 %>%

• group_by(fmonth) %>%
  

• summarise(mean_dv=mean(drvisits, na.rm=TRUE)) %>%
  

• ggplot(drvisits2013, aes(x=factor(fmonth), y=mean_dv))+
  

• geom_boxplot()
  

But it gave me another error.
"Error in ggplot.default(., drvisits2013, aes(x = factor(fmonth), y = mean_dv)) :
object 'drvisits2013' not found"

Please let me know if you had other ideas.
Thanks,

[nirgrahamuk]

@Ttaheri

%>%

You have an erroneous magrittr pipe between summarise and ggplot