Michael (and others) - Right, 'within' did work, I had placed it in the wrong
location previously, which your example code made clear. I wrapped several
of these functions within a function to address all the desired flags in a
single pass (probably horribly inefficient but it works). Thanks agai
So I don't know what you are trying to do with your function (and I
might have incidentally messed it up), but within certainly does add
the desired column:
WaterData <- structure(list(Site = structure(c(3L, 3L, 3L, 3L, 3L,
3L), .Label = c("BV",
"CB", "KP", "LA", "MR", "PIE"), class = "factor"), T
forgot to attach the data set
http://r.789695.n4.nabble.com/file/n4170695/WaterData.txt WaterData.txt
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Thanks to everyone for continued assistance with this problem. I realize
that I had not included enough information, hopefully I have done so here.
I attached a dput output of a sample of the data titled 'WaterData' (and str
output below). Below are dput outputs of the function I am trying to ge
Can't this be fixed by switching with to within? E.g.,
x = data.frame(a = 1:3, b = 4:6)
AddRowSums <- function(df) within(df, d <- a + b)
x <- AddRowSums(x)
print(x)
Michael
On Wed, Dec 7, 2011 at 12:07 AM, David Winsemius wrote:
>
> On Dec 6, 2011, at 5:53 PM, Steve E. wrote:
>
>> Bill (and
On Dec 6, 2011, at 5:53 PM, Steve E. wrote:
Bill (and David),
Thank you very much for taking the time to respond to my query.
You were right, I was creating and calling the function exactly as
you had
predicted. I revised the structure based on your suggestion. It
runs but
the output is
Bill (and David),
Thank you very much for taking the time to respond to my query.
You were right, I was creating and calling the function exactly as you had
predicted. I revised the structure based on your suggestion. It runs but
the output is an array of the flags that are not attached to the
ject.org] On
> Behalf Of David Winsemius
> Sent: Tuesday, December 06, 2011 12:05 PM
> To: Steve E.
> Cc: r-help@r-project.org
> Subject: Re: [R] help wrapping findInterval into a function
>
>
> On Dec 6, 2011, at 11:43 AM, Steve E. wrote:
>
> > Dear R Community,
On Dec 6, 2011, at 11:43 AM, Steve E. wrote:
Dear R Community,
I hope you might be able to assist with a small problem creating a
function.
I am working with water-quality data sets that contain the
concentration of
many different elements in water samples. I need to assign quality-
cont
Dear R Community,
I hope you might be able to assist with a small problem creating a function.
I am working with water-quality data sets that contain the concentration of
many different elements in water samples. I need to assign quality-control
flags to values that fall into various concentrati
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