search for: temperaturemay

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2006 Jul 02
2
how to recode in my dataset?
...irst, i'd like to say something about the idea of recoding: My dataset have three variables:type,soiltem and airtem,which means grass type, soil temperature and air temperature. As we all known, the change of air temperature is greater than soil temperature,so the values in those two different temperaturemay represent different range. My recoding is to recode soiltem with 0.2 intervals, and airtem with 0.5 intervals, that is: In soiltem:0~0.2<-0.1, 0.2~0.4<-0.3, 0.4`0.6<-0.5,...etc; In airtem:0~0.5<-0.25, 0.5~1<-0.75, 1`1.5<-1.25,...etc; My example like this: type<-c(1, 1, 2, 3,...