auto-inrementing 'set output'

[Mojca M. <moj...@gm...>]

Dear list,

I would like to know if there is any trick to create a lot of PNG
images without calling "set output ..." for each of them.

If I use gnuplot with PostScript, PDF, any TeX-based on any
interactive terminal, I get all the plots without having to call set
output for each of them.

I would like to be able to set something like
    set output pattern "filename-%03d.png"
and then just call "plot" without having to worry about filenames.

(Writing a script to generate plots is not an option and auto-insert
"set output" is not an option.)

Have there ever been any plans about such functionality?

Thank you,
    Mojca