R ggplot2 stat count must not be used with a y aesthetic error in Bar graph

Question

I am getting this error while plotting a bar graph and I am not able to get rid of it  I have tried both qplot and ggplot but still the same error   Following is my code    library dplyr   library ggplot2     Investigate data further to build a machine learning model  data country   data   gt              group by country    gt              summarise conversion rate   mean converted      Ist method   qplot country  conversion rate  data   data country geom    bar   stat   identity   fill     country     2nd method   ggplot data country  aes x country y   conversion rate  geom bar     Error     stat count   must not be used with a y aesthetic   Data in data country       country conversion rate      lt fctr gt             lt dbl gt    1   China     0 001331558   2 Germany     0 062428188   3      UK     0 052612025   4      US     0 037800687   The error is coming in bar chart and not in the dotted chart

User · Answer

when you want to use your data existing in your data frame as y value  you must add stat    identity  in mapping parameter  Function geom bar have default y value  For example   ggplot data country     geom bar mapping   aes x   country  y   conversion rate   stat    identity

User · Answer

You can use geom col   directly  See the differences between geom bar   and geom col   in this link https   ggplot2 tidyverse org reference geom bar html     geom bar   makes the height of the bar proportional to the number of cases in each group If you want the heights of the bars to represent values in the data  use geom col   instead     ggplot data country  aes x country y   conversion rate  geom col

User · Answer

First off  your code is a bit off  aes   is an argument in ggplot    you don t use ggplot        aes        layers  Second  from the help file  geom bar      By default  geom bar uses stat  count  which makes the height of the   bar proportion to the number of cases in each group  or if the weight   aethetic is supplied  the sum of the weights   If you want the heights   of the bars to represent values in the data  use stat  identity  and   map a variable to the y aesthetic    You want the second case  where the height of the bar is equal to the conversion rate So what you want is     data country  lt - data frame country   c  China    Germany    UK    US                 conversion rate   c 0 001331558 0 062428188  0 052612025  0 037800687   ggplot data country  aes x country y   conversion rate    geom bar stat    identity     Result

User · Answer

I was looking for the same and this may also work   p Wages all A MEAN  lt - Wages all   gt                     group by  Career Cluster   Year   gt                     summarize ANNUAL MEAN WAGE   mean A MEAN        names p Wages all A MEAN     1   Career Cluster     Year     ANNUAL MEAN WAGE    p Wages all a mean  lt - ggplot p Wages all A MEAN  aes Year  ANNUAL MEAN WAGE   color   Career Cluster                       geom point aes col  Career Cluster     pch 15  size 2 75  alpha 1 5 4                     theme axis text x   element text color   993333    size 10  angle 0    face  italic   p Wages all a mean

[r] R ggplot2: stat_count() must not be used with a y aesthetic error in Bar graph

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