Take for example the following data.frame:
a-c(1,1,5)
b-c(3,2,3)
c-c(5,1,5)
sample.data.frame-data.frame(a=a,b=b,c=c)
I'd like to be able to use unique(sample.data.frame), but have
unique() ignore column a when determining the unique elements.
However, I figured that this would be setting for
On 7/9/07, Andrew Yee [EMAIL PROTECTED] wrote:
Take for example the following data.frame:
a-c(1,1,5)
b-c(3,2,3)
c-c(5,1,5)
sample.data.frame-data.frame(a=a,b=b,c=c)
I'd like to be able to use unique(sample.data.frame), but have
unique() ignore column a when determining the unique
Thanks. But in this specific case, I would like the output to include
all three columns, including the ignored column (in this case, I'd
like it to ignore column a).
Thanks,
Andrew
On 7/9/07, hadley wickham [EMAIL PROTECTED] wrote:
On 7/9/07, Andrew Yee [EMAIL PROTECTED] wrote:
Take for
Andrew Yee wrote:
Thanks. But in this specific case, I would like the output to include
all three columns, including the ignored column (in this case, I'd
like it to ignore column a).
df[!duplicated(df[,c(a,c)]),]
or perhaps
df[!duplicated(df[-2]),]
Thanks,
Andrew
On 7/9/07, hadley
On 7/9/07, Peter Dalgaard [EMAIL PROTECTED] wrote:
Andrew Yee wrote:
Thanks. But in this specific case, I would like the output to include
all three columns, including the ignored column (in this case, I'd
like it to ignore column a).
df[!duplicated(df[,c(a,c)]),]
or perhaps
On Mon, 9 Jul 2007, Andrew Yee wrote:
Thanks. But in this specific case, I would like the output to include
all three columns, including the ignored column (in this case, I'd
like it to ignore column a).
sample.data.frame[!duplicated(sample.data.frame[-1]), ]
(index to exclude columns as
Thanks, this works perfectly.
On 7/9/07, Prof Brian Ripley [EMAIL PROTECTED] wrote:
On Mon, 9 Jul 2007, Andrew Yee wrote:
Thanks. But in this specific case, I would like the output to include
all three columns, including the ignored column (in this case, I'd
like it to ignore column a).
