PM
Subject: Re: [R] summing and combining rows
ok, so it looks like aggregate lists them separately unless everything
in the 2 rows matches. Below, we have 2 plots where the density is
different in Class3 than Class4, and these are not summed. Is that your
understanding?
Thanks for your help
ype,data=dat2,sum)
Data LatCat Elevation Type Stems
1 VTM Lat6 500 Conifer 0
2 VTM Lat6 900 Conifer 3
3 VTM Lat6 1500 Conifer 5
A.K.
- Original Message -
From: Christopher R. Dolanc
To: arun
Cc:
Sent: Wednesday, August 8, 2012 2:00 PM
Subject
dat3<-dat3[,c(1:3,5,4)]
dat3
# Plot Elevation Area SizeClass Stems
#1 12 1200 132.4 Class34 1
#2 17 2320 209.1 Class34 8
A.K.
- Original Message -
From: Christopher R. Dolanc
To: arun
Cc:
Sent: Tuesday, August 7, 2012 5:47 PM
Subject: Re: [R]
ass4 values
separately.
A.K.
- Original Message -
From: Christopher R. Dolanc
To: arun
Cc:
Sent: Tuesday, August 7, 2012 6:38 PM
Subject: Re: [R] summing and combining rows
Hmmm. It looks like it's only giving me the values for Class3, instead
of summing, which is why I thought the "
On Tue, Aug 7, 2012 at 12:47 PM, Christopher R. Dolanc
wrote:
> Hello,
>
> I have a data set that needs to be combined so that rows are summed by a
> group based on a certain variable. I'm pretty sure rowsum() or rowsums() can
> do this but it's difficult for me to figure out how it will work for
Hello,
I have a data set that needs to be combined so that rows are summed by a
group based on a certain variable. I'm pretty sure rowsum() or rowsums()
can do this but it's difficult for me to figure out how it will work for
my data based on the examples I've read.
My data are structured li
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