On 17.10.2011 20:53, Li, Yan wrote:
Hi All,
I have some data from which I set four points to be breaks. Based on these
points, I cut the dataset into four groups and assign a number to it:
<=331.04 assign 0
331.04<=476.07 assign data-331.04/(476.07-331.04)
476.07<=608.66 assign 1
608.66<=791.5 assign 791.5- data/(791.5-608.66)
791.5 and NA assign 0
Breaks 331.04 476.07 608.66 791.5
NA
m_group 0 x 1 x
0 0
I can use cut() to group the data according to the breaks but having difficulty
to assign the two calculated interval values.
Based on the levels of the factor resulted by cut(), you can calculate a
new vector easily. But since you have not specified a reproducible
example, I cannot quickly change it in order to show how it works.
Best,
Uwe Ligges
Thank you very much!
Regards,
Yan
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