search for: par_error

[I have abbreviated the subject as jitterbug has been having probems with long subjects.] The issue here is that one cannot mix log/non-log axes in the calls to screen(), as the appropriate par() parameter is read-only, but the meaning of yaxp depends on it. But beyond that you can't set x/yaxp for log axes. You should be able to do this: you can in the S original. A simpler version: plot