[R] [FORGED] About error bars on barplots

[lily li]

Okay, thanks for letting me know. I found the plot from website so thought
there may be a way. I just converted the format of the figure, and
attached. But I don't mean to use it as you suggested. Thanks.

On Sat, Jun 17, 2017 at 6:30 PM, Rolf Turner <r.turner at auckland.ac.nz>
wrote:

> On 18/06/17 12:10, lily li wrote:
>
>> Hi R users,
>>
>> I have a question about adding uncertainty bars to stacked bar plots.
>>
>> DF:
>>    year   A   B   C   Amin  Amax  Bmin  Bmax  Cmin  Cmax
>>   2009  40  45  15   30      61       23       56      14       17
>>   2010  36  41  23   26      54       22       51      22       24
>>
>> I use the code below:
>>
>> DF.refm = melt(subset(DF[,c(1:4)]),id.vars='year',variable_name='Legend')
>>
>> fig1 = ggplot(data=DF.refm, aes(x=year,y=value,fill=Legend))+
>>    geom_bar(stat='identity',size=.5)+ theme_bw()+ xlab('Year')+
>> ylab('Percent (%)')
>> print(fig1)
>>
>> But I don't know how to change it a little bit. For example, how to add
>> the
>> error bars on the plot, as is shown in the figure below? The error bar for
>> variable A ranges from Amin to Amax, the same applies to variables B and
>> C.
>> Thanks for your help.
>>
>
>
> Your figure did not come through, at least not to me.  You are probably
> doing something fancy, and the mailing list software stripped out the
> figure.  *Do* learn to keep things simple.  _Attach_ figures as *.pdf
> files, for instance.
>
> That being said, to answer your question, my advice (and that of many
> others) is: DON'T.  Error bars on boxplots (such plots are sometimes known
> as "dynamite plots" or "detonator plots") are considered by the cognoscenti
> to be abominations.
>
> cheers,
>
> Rolf
>
> --
> Technical Editor ANZJS
> Department of Statistics
> University of Auckland
> Phone: +64-9-373-7599 ext. 88276
>
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