[R] Creating pdf report

I'm looking for a way to create a pdf report that contains multiple graphs on one page as well as tables (ideally with some lines below categories etc.) . I have used the pdf(filename) followed by dev.off() to date but this prints one graph per page and does not seem to have functionality for ta

[R] Factor to variable

I have a data frame called z that includes four columns: Col1 Col2 Col3 Col4 Text1 Text2 X0.1 5 Text1 Text2 X0.2 10 Text1 Text2 X0.3 15 Text1 Text3 X0.1 5 Text1 Text3 X0.2 10 Text1 Text3 X0.3 15 I am trying to convert the 3rd column to the numeric value excluding the X so that I can produce a la

[R] Factor to variable

I have a data frame called z that includes four columns: Col1 Col2 Col3 Col4 Text1 Text2 X0.1 5 Text1 Text2 X0.2 10 Text1 Text2 X0.3 15 Text1 Text3 X0.1 5 Text1 Text3 X0.2 10 Text1 Text3 X0.3 15 I am trying to convert the 3rd column to the numeric value excluding the X so that I can produce a la