Re: label docs

[Ethan A M. <merritt@u.washington.edu>]

On Saturday 11 October 2008, James R. Van Zandt wrote:
> 
> In the process, I discovered that the title in the key could come from
> a column heading in the data file.  That wasn't mentioned under "help
> plot title", so I added a cross reference for that, too.  I thought
> about changing the syntax example from
> 
>        title "<title>" | notitle ["<ignored title>"]
> to
>        title "<title>" | title <columnnumber> | notitle ["<ignored title>"]
> 
> Should I?

Unfortunately, the "title <columnno>" form is not quite interchangeable
with the usual title command. As the code is currently written, it must
come immediately after the 'using' clause.  This could be considered a
bug, but I don't know of an easy way to fix it.  Anyhow, as it stands,
that documentation change would be incorrect.  

e.g.
   plot 'foo' using 1:2 title 2    linetype 5   # OK
   plot 'foo' using 1:2 linetype 5 title "FOO"  # OK
   plot 'foo' using 1:2 linetype 5 title 2      # fails

-- 
Ethan A Merritt