[R] Re place Values within vector using Translation vector
Greg.Snow at imail.org
Wed Feb 18 22:34:40 CET 2009
The call to replace is replacing the 1st 3 elements of a (your indexes in Trans_CR) with the values and leaving the 4-6 elements alone. For what you want, try:
A <- Trans_Prob_values[ match(a, Trans_CR) ]
Hope this helps,
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
greg.snow at imail.org
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Christian Langkamp
> Sent: Wednesday, February 18, 2009 2:25 PM
> To: r-help at r-project.org
> Subject: [R] Re place Values within vector using Translation vector
> Dear everyone
> I would like to change values in vectors doing a translation. i.e. I
> have a
> start vector giving me the levels in one vector (numbers 1 to x -
> and then I have a second vector giving me the values to be allocated
> probabilities), but the number of potential rating classes and loss
> estimates is still subject to a lot of discussion.
> Attached a simplified version of the problem (original has more values
> needs to stay flexible, i.e. length of translation vector can change.
> Trans_Prob_values<-c(0.005, 0.01, 0.1)
> A<-replace(a, Trans_CR, Trans_Prob_values)
> This however produces
>  0.005 0.010 0.100 1.000 2.000 3.000
> as opposed to the desired result.
> The help however says
> "replace replaces the values in x with indexes given in list by those
> in values. If necessary, the values in values are recycled. " which in
> view should be exactly doing the job intended above.
> Constructions with nested ifelse statements and individual replacements
> too cumbersome in my view.
> I searched for conditional replacement, vector replace, replace
> function and
> read the problems, but generally they have conditions like age>30 then
> not a direct translation of values.
> If anyone has an idea, please do share it.
> View this message in context: http://www.nabble.com/Replace-Values-
> Sent from the R help mailing list archive at Nabble.com.
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-
> and provide commented, minimal, self-contained, reproducible code.
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