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Dear R users, I think i have a simple question which i want to explain by an example; i have several 2-digit industry codes that i want to use for conducting by-industry analysis but i think there is a problem with the degrees of freedom! for example, when i do my analysis without any 2-digit industry code, i got the following summary (i have 146574 observations in total): >

...h is not i want. in fact i know that people create this kind of dummies by using loop since there are many dummies to create, but i dont know how to do it. i hope i could be more explicit now, and you could help me more at this time. Thank you for your help in advance -------------------------- Serdal, I think what David is saying: just take those 2 variables you have and specify them as factors. Assuming your data frame is called "MyData": MyData$Ind_1<-as.factor(MyData$Ind_1) MyData$Ind_2<-as.factor(MyData$Ind_2) This way R will know they are not numeric variables but categ...

Dear R users, I have a simple question (probably) but i couldnt how to find a solution for that. i am using 2 digit industry codes and 3 digit industry codes for my model, and i need to create dummies for the industries. The case is simple for the 2-digit industries since there are not that mcuh of them, so i am creating my dummies as following ind_2da<-(ind_2d==11)#for the 11th industry

hi, i am writing my master thesis and i am dealing with 146474 observations (panel data), i have just learned the R so i am a beginner!! i am trying to use the "plm" package and i have a duplication problem; i have written the following commands to read my data and create my model >dsn<-plm.data(ds, c("stno", "year")) ds=name of my data, stno=individual

Dear all, I have a basic(!) econometric question which i couldnt find the way to do it in R. Well this could be also because of my wrong interpretation of the econometric process that i am trying to implemet.so here i wanna ask if am doing a logical mistake!!! so here is the question with the explanation of the process, hope there will be someone who can help me! suppose i have a basic

Thank you for your advice, ill try to be more explicit now, i wasnt in the first mail because i thought it is a simple question to answer, so; i have a panel data which contains 48858 observations during 3 year therefore, there are 146574 observations in total, i have 22 different industries defined by 2-digit codes such as 11, 13,14,16...40 therefore, ind_2d contains 22 2-digit codes for