loop bug or feature?

[<pl...@pi...>]

Hi,


I need to plot a series of data files and one reference file.


here I get all the data files and one test plot

plot[0:1.2] for [ len=9000:7000:-50 ] s=0 \
, "data-".sprintf("%d",len).".out" u (1/$4):5 w l tit
sprintf("%d",len).".out" \
, "test_filter.out" u (1/$4):($5*1.5e08) w l tit " filter resp " \


but this way around I get the test plot n time and only the last data
file plotted.


plot[0:1.2]  for [ len=9000:7000:-50 ] s=0 \
, "test_filter.out" u (1/$4):($5*1.5e08) w l tit " filter resp " \
, "data-".sprintf("%d",len).".out" u (1/$4):5 w l  tit
sprintf("%d",len).".out" \



gnuplot> help for

  The `plot`, `splot`, `set` and `unset` commands may optionally contain an
  iteration for clause.  This has the effect of executing the basic command
  multiple times, each time re-evaluating any expressions that make use
of the
  iteration control variable.



This does not seem consistent with what happens.

regards, Peter.