round function in geom_text

[pradip...@samhsa.hhs.gov]

 

Hello,

 

I am using the round function (as shown below) for gem_text.  In the ggplot2 chart, the text is printed as 24 for "round (24.0,1)".  Could anyone please let me know what I am doing wrong here?

 

####################

geom_text (aes(label=round(est,1)), position=position_dodge(width=0.9),

################

 

I have tested the code in a separate R session. I don't understand why the round function of the same number (in this case it is 24.0) give somewhat different results depending on the length of the vector (1-element vs. 2-element vector)? Please see below.

 

############

 x <- print (round(24.0,1))

[1] 24

 

 y <- print (round (c(24.0, 24.1),1))

[1] 24.0 24.1

#############

 

Thanks,

 

Pradip Muhuri

[Ista Zahn]

Hi,

I don't think this has anything to do with round()

> print(24)
[1] 24
> print(24.1)
[1] 24.1
> print(c(24.0, 24.1))
[1] 24.0 24.1

So it doesn't have anything to to with round(), or with the length of x.

If you want to want to keep trailing zeros I think you will have to
turn to something like formatC or sprintf.

> formatC(c(24.0, 24.1), format="f", digits=1)
[1] "24.0" "24.1"

Best,
Ista

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[Muhuri, Pradip (SAMHSA/CBHSQ)]

Ista,

Thank you so much. The FormatC function worked fine for trailing zeros.

Pradip

Pradip K. Muhuri, PhD
Statistician
Substance Abuse & Mental Health Services Administration
The Center for Behavioral Health Statistics and Quality
Division of Population Surveys
1 Choke Cherry Road, Room 2-1071
Rockville, MD 20857
 
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e-mail: Pradip...@samhsa.hhs.gov
 
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