Am 13.08.2009 um 05:00 schrieb Aditya Mahajan:

> You just need to work a little harder.
>
> \startbuffer[1]
> This is a test
> \stopbuffer
>
> \startbuffer[2]
> Another test
> \stopbuffer
>
> \startbuffer[3]
> And again
> \stopbuffer
>
> \startluacode
>  userdata = userdata or {}
>  function userdata.shift(i)
>    return "(" .. i .. "cm ," .. i .. "cm )"
>  end
>
>  function userdata.buffers(i)
>    local idx = string.format("%s",i)
>    local b = buffers.data[idx]
>    if b then
>      if type(b) == "table" then
>        return table.concat(b)
>      else
>        return b
>      end
>    else
>      return "unknown"
>    end
>  end
>
>  function userdata.draw_buffer(i)
>    return "draw btex " .. userdata.buffers(i) .. " etex  shifted "..  
> userdata.shift(i) .. ";"
>  end
> \stopluacode
>
> \starttext
>
>
> \startluacode
>
>  context.startMPpage({offset = "1ex", width = [[\paperwidth]],  
> height = [[\paperheight]]})
>    for i = 1,3 do
>      context(userdata.draw_buffer(i))
>    end
>  context.stopMPpage()
> \stopluacode
>
> \stoptext

Thank you very much!

I played today (a couple of hours) with your solution and adapted some  
things, so if someone is interested, I've attached the file.



PS. I like the math.random() function I found in the Lua manual.

Andreas