Special characters in the R language

Question

I have a table that looks like this:

1β 2β 1.0199e-01 2.2545e-01 2.5303e-01 6.5301e-01 1.2151e+00 1.1490e+00 

etc.

I want to make a field code for this data. I use the following commands:

 pdf('rtest.pdf') w1<-read.table("data_CMR",header=T) w2<-read.table("data_C",header=T) boxplot(w1[,], w2[,], w3[,],outline=FALSE,names=c(colnames(w1),colnames(w2),colnames(w3))) dev.off() 

The problem is not the beta symbol (β), I get two dots (..) in the output.

Any suggestions to solve this problem.

Thanks in advance.

Answer 1

It also works

 pdf('rtest.pdf') w1<-read.table("data_CMR",header=T) w2<-read.table("data_C",header=T) one<-expression(paste("1", beta,sep="")) two <- expression(paste("2", beta,sep="")) boxplot(w1[,], w2[,], w3[,],outline=FALSE, names=c(one,two)) dev.off() 

Answer 2

The suggestion to use check.names will prevent the addition of “X” to “1β” and “2β”, which otherwise would have occurred even after sorting the encoding (since column names should not start with numbers. (You can also use the “names” argument for boxplot.)

 w1<-read.table(text="1β 2β 1.0199e-01 2.2545e-01 2.5303e-01 6.5301e-01 1.2151e+00 1.1490e+00",header=TRUE, check.names=FALSE, fileEncoding="UTF-8") boxplot(w1) 

Answer 3

This may be an encoding problem. Try adding encoding='UTF-8' to the read.table .

 w1<-read.table("data_CMR",header=T,encoding='UTF-8')