Hello,
Inline.
Às 13:26 de 25/05/20, Burgess, Jamie escreveu:
Dear all,
I hope this message finds you well. I am currently trying to subset my data by two variables, so far, I have tried two different ways to stratify participants into groups.
I don't understand what you mean by this, do you want to split the data
set into sub-dataframes by 2 variables? If so try
df_groups <- split(data, list(data$Var1, data$Var2), drop = TRUE)
This produces a list of sub-df's.
To get the group with Var1 == 1 and Var2 == 1
grp_name <- paste(1, 1, sep = '.')
df_groups[[grp_name]]
But if you only want the sub-df with Var1 == 1 and Var2 == 1, any of the
following will do it.
data[data$Var1 == 1 & data$Var2 == 1, ]
subset(data, Var1 == 1 & Var2 == 1)
Hope this helps,
Rui Barradas
I would like to use the �summary� and �table� arguments to characterise
the data of participants based on the presence of two variables and
summarise this sub-set against a third variable.
I have used this method:
dgb001<-subset(data,data$variable==1 & data,data$variable)
However, I get the following error: �Error: cannot allocate vector of size 16.0
Gb�. Is there another method I can try?
Kind regards,
Jamie Burgess
PhD Student Endocrinology and Diabetes
University of Liverpool
Aintree University Hospital &
The Walton Centre
Institute of Ageing & Chronic Disease
0151 529 5936
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
