Hi,
Try this:
dat1<-data.frame(var1=15:25)
dat1$var2<-NA
dat1$var2[2:11]<-dat1$var1[1:10]
dat1
var1 var2
1 15 NA
2 16 15
3 17 16
4 18 17
5 19 18
6 20 19
7 21 20
8 22 21
9 23 22
10 24 23
11 25 24
You can also do the same within the sin
Hi Ernie,
I'll use the built in mtcars dataset for demonstrative purposes.
You have some condition, which can be used to create an index
## show data frame
mtcars
## create index based on your condition
i <- which(mtcars$carb == 1)
## set those rows of mtcars in your index
## to the index - 1
mt
Hi Silvano,
Your function is not part of the standard R installation. After some
googling I found out, but next time:
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
The betareg package provides manua
Thank you Rolf,
>> Using the analysis of co-variance example from MASS (fourth edition, p
>> 142), what is the correct notation for the formula "Gas, ~ Insul/Temp
> There shouldn't be a comma after ``Gas'' in that formula.
>> - 1"? Obviously, if we fit it as two separate models (as in the
>> exa
On 20/07/11 07:24, Carson Farmer wrote:
Dear list, I am currently writing up some of my R models in a more
formal sense for a paper, and I am having trouble with the notation.
Although this isn't really an 'R' question, it should help me to
understand a bit better what I am actually doing when fi
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