Dear All,
could you please help me how to get the output from the following example?
x<-c(543, 543, 543, 543, 551 , 551 ,1128 ,1197, 1197)
diff<-x-lag(x)
diff
[1] NA 0 0 0 8 0 577 69 0
how to index the occassions in x repeatedly if the diff>15? if not, it will
give a new index
i want the output be like y
y<-c(1,1,1,1,1,1,2,3,3)
thanks,
Lijun
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