As a follow up to Thierry's response.
With data as dat1
dat1 <- structure(list(id = 1:12, weight = c(453L, 527L, 520L, 460L,
496L, 461L, 519L, 472L, 531L, 473L, 509L, 503L), breed = c("brahman",
"brahman", "brahman", "brahman", "durham", "durham", "durham",
"durham", "durham", "durham", "durham", "durham")), .Names = c("id",
"weight", "breed"), class = "data.frame", row.names = c(NA, -12L
))
library(ggplot2)
ggplot(dat1, aes(breed, weight)) +
geom_boxplot()
library(ggplot2)
ggplot(dat1, aes(breed, weight)) +
geom_boxplot()
I would note that it is difficult to break down the data by breed when your
sample data only included brahman as a breed. In the sample data above I
changed a few entries to my favourite breed of Durham.
Have a look at one (or both) of these links for some useful suggestions on how
to ask questions on R-help. In particular, read about dput. It is by far the
best way to supply sample data for the readers.
Good luck
John Kane
Kingston ON Canada
> -----Original Message-----
> From: lyl...@gmail.com
> Sent: Sun, 15 Mar 2015 14:50:22 +1100
> To: r-help@r-project.org
> Subject: [R] How am i able to create Box plots of a factor (weight)
> separated by other factors (breed)?
>
>>
>>
>> I have data with columns for animal ID, breed, and weight.
>>
>> I'd like to create a box plot of weight, separated by breed (there are 4
>> breeds).
>>
>> Any ideas?
>>
>> Here's a sample of the data (there are 100 rows):
>>
>> id weight breed
>> 1 453 brahman
>> 2 527 brahman
>> 3 520 brahman
>> 4 460 brahman
>> 5 496 brahman
>> 6 461 brahman
>> 7 519 brahman
>> 8 472 brahman
>> 9 531 brahman
>> 10 473 brahman
>> 11 509 brahman
>> 12 503 brahman
>>
>> Thanks for your help!
>>
>
> [[alternative HTML version deleted]]
>
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