5 messages · Svetlana Eden, Corey Moffet, Spencer Graves +1 more
The funciton c() works differently for strings and for factors: For strings:
l = c('a', 'b')
l
[1] "a" "b" For factors:
l = c(factor('a'), factor('b'))
l
[1] 1 1 What should be the right technique for merging factors?
Svetlana Eden Biostatistician II School of Medicine
Department of Biostatistics Vanderbilt University
try:
l <- factor(c('a','b'))
l
The funciton c() works differently for strings and for factors: For strings:
l = c('a', 'b')
l
[1] "a" "b" For factors:
l = c(factor('a'), factor('b'))
l
[1] 1 1
What should be the right technique for merging factors?
--
Svetlana Eden Biostatistician II School of Medicine
Department of Biostatistics Vanderbilt University
______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
With best wishes and kind regards I am Sincerely, Corey A. Moffet Rangeland Scientist USDA-ARS Northwest Watershed Research Center 800 Park Blvd, Plaza IV, Suite 105 Boise, ID 83712-7716 Voice: (208) 422-0718 FAX: (208) 334-1502
To combine objects that are already factors, the solution I've
found is to first coerce them to mode character:
> F1 <- factor("a")
> F2 <- factor("b")
> factor(c(as.character(F1), as.character(F2)))
[1] a b
Levels: a b
hope this helps.
spencer graves
try:
l <- factor(c('a','b'))
l
At 12:15 PM 2/5/2004 -0600, Svetlana Eden wrote:
The funciton c() works differently for strings and for factors: For strings:
l = c('a', 'b')
l
[1] "a" "b" For factors:
l = c(factor('a'), factor('b'))
l
[1] 1 1
What should be the right technique for merging factors?
--
Svetlana Eden Biostatistician II School of Medicine
Department of Biostatistics Vanderbilt University
______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
With best wishes and kind regards I am Sincerely, Corey A. Moffet Rangeland Scientist USDA-ARS Northwest Watershed Research Center 800 Park Blvd, Plaza IV, Suite 105 Boise, ID 83712-7716 Voice: (208) 422-0718 FAX: (208) 334-1502
______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Did you mean the function c() or the function(C)? They are not the same thing! Also, R does not have `strings' but it does have character vectors.
try:
l <- factor(c('a','b'))
l
At 12:15 PM 2/5/2004 -0600, Svetlana Eden wrote:
The funciton c() works differently for strings and for factors: For strings:
l = c('a', 'b')
l
[1] "a" "b" For factors:
l = c(factor('a'), factor('b'))
l
[1] 1 1
What should be the right technique for merging factors?
--
Svetlana Eden Biostatistician II School of Medicine
Department of Biostatistics Vanderbilt University
______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
With best wishes and kind regards I am Sincerely, Corey A. Moffet Rangeland Scientist USDA-ARS Northwest Watershed Research Center 800 Park Blvd, Plaza IV, Suite 105 Boise, ID 83712-7716 Voice: (208) 422-0718 FAX: (208) 334-1502
______________________________________________ R-help at stat.math.ethz.ch mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
I have two factors l1, l2, and I'd like to merge them. Function c() does not give me the result I want:
l1 = factor(c('a', 'b'))
l2 = factor(c('c', 'd'))
lMerge = c(l1, l2)
lMerge
[1] 1 2 1 2
I'd like to merge l1 and l2 and to get lMerge ---------------------------------------------- [1] a b c d Levels: a b c d instead of ---------- [1] 1 2 1 2
How should I do that? ---------------------
Svetlana Eden Biostatistician II School of Medicine
Department of Biostatistics Vanderbilt University