Thank you for the response. As expected, the following expression worked:
df[order(df$x),]
I would expect the following expression to work also:
df[order(df$x)]
However it does not. That is, the comma is needed. Please tell me why
the comma is there.
Thanks
Bob
On 1/26/2016 8:19 AM, S Ellison wrote:
On 23.01.2016 01:21, Robert Sherry wrote:
In R, I run the following commands:
df = data.frame( x=runif(10), y=runif(10) )
df2 = df[order(x),]
You use another x from your workspace, you actually want to
df2 = df[order(df[,"x"]),]
or
df[order(df$x),]
And just to prevent yet more confusion, you might also want to avoid 'df' as a
name. 'df' is the function that returns the density of the F distribution ...
S Ellison
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