Hi, you have two problems in your first scenario,
1- Wrong operator precedence. For example, > 1 == 2 | 3 [1] TRUE where 1==2 is tested as FALSE, but 1 is not tested against 3 for equality as it would be using, > 1 == 2 | 1 == 3 [1] FALSE or using %in% 2:3 Instead, R evaluates "FALSE | 3", and 2- it so happens that non-zero integers are treated as TRUE, according to ?"|" > as.logical(1) [1] TRUE > as.logical(0) [1] FALSE HTH, baptiste 2009/9/5 Yichih Hsieh <yichih.hs...@gmail.com> > Dear all, > > I got another problem: > > if education have five levels > > edu=1 > edu=2 > edu=3 > edu=4 > edu=5 > > If I want to appoint y=edu2~4 in 1990 > which programs is correct? > I tried this two programs, they both work, but two results is different. > > 1. > fig2b<-reldist(y=mu1990$wage[mu1990$edu==2|3|4],......) > > > 2. > fig2b<-reldist(y=mu1990$wage[mu1990$edu%in%2:4],......) > > which one is correct? > and why they have different results? > > > All help high appreciated. > > > best, > Yichih > > 2009/9/5 Yichih Hsieh <yichih.hs...@gmail.com> > > > > > Dear Petr, > > > > your suggestion is useful > > > > many thanks for your help ! > > > > > > best, > > Yichih > > > > 2009/9/3 Petr PIKAL <petr.pi...@precheza.cz> > > > > Hi > >> > >> use any of suitable selection ways that are in R. > >> > >> E.g. > >> > >> data[data$gender==1, ] > >> > >> selects only female values > >> > >> data$wage[(data$gender==1) & (data$race=1)] selects black female wages. > >> > >> and see also ?subset > >> > >> Regards > >> Petr > >> > >> r-help-boun...@r-project.org napsal dne 03.09.2009 10:51:59: > >> > >> > Dear all, > >> > > >> > I have 1980~1990 eleven datas, > >> > every year have three variables, > >> > wage > >> > gender(1=female, 2=male) > >> > race(1=black, 2=white) > >> > > >> > My original commands is: > >> > > >> > fig2b<-reldist(y=mu1990$wage,yo=mu1980$wage,.......) > >> > > >> > I have three questions: > >> > 1. If I want to appoint y=women's wage in 1990 > >> > yo=women's wage in 1980 > >> > 2. If I want to appoint y=women's wage in 1990 > >> > yo=men's wage in 1990 > >> > 3. If I want to appoint y=black women's wage in 1990 > >> > yo=white women's wage in 1990 > >> > > >> > How can I modify the commands? > >> > > >> > All help highly appreciated. > >> > > >> > Best, > >> > Yichih > >> > > >> > > >> > -- > >> > Yichih Hsieh > >> > > >> > e-mail : yichih.hs...@gmail.com > >> > > >> > [[alternative HTML version deleted]] > >> > > >> > ______________________________________________ > >> > R-help@r-project.org mailing list > >> > https://stat.ethz.ch/mailman/listinfo/r-help > >> > PLEASE do read the posting guide > >> http://www.R-project.org/posting-guide.html< > http://www.r-project.org/posting-guide.html> > >> > and provide commented, minimal, self-contained, reproducible code. > >> > >> > > > > > > -- > > Yichih Hsieh > > > > e-mail : yichih.hs...@gmail.com > > > > > > -- > Yichih Hsieh > > e-mail : yichih.hs...@gmail.com > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- _____________________________ Baptiste Auguié School of Physics University of Exeter Stocker Road, Exeter, Devon, EX4 4QL, UK http://newton.ex.ac.uk/research/emag ______________________________ [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
