> ts.plot(retr_sadj) (it is works) > ts.plot(retr_sadj, retr) (iy gives a error) Error in .cbind.ts(list(...), .makeNamesTs(...), dframe = dframe, union = TRUE) : no time series supplied PLEASE HELP...

> ts.plot(retr_sadj) (it is works)

> ts.plot(retr_sadj, retr) (iy gives a error)

Error in .cbind.ts(list(...), .makeNamesTs(...), dframe = dframe, union = TRUE) : no time series supplied

PLEASE HELP ME. HOW CAN I DRAW THESE TWO THINGS ON THE SAME GRAPH?

I want to prepare a combined ts plot for "retr_sadj" and "retr", but Rstudio gives an error.