problem of mouse rotation of gnuplot demo plot3 plot on built octave-3.0.0+ (ChangLog 2008-03-25) on cygwin/mingw

[Tatsuro MATSUOKA]

Hello 

On  built octave-3.0.0+ (ChangLog 2008-03-25) on cygwin/mingw, I tried  'demo 
plot3'.
The plot itsef is no problem.
(I have been complete misled that mouese rotation of a 3d plot is no problem 
data via pipe unlike
mouse zooming in a 2d plot.)

While the graph rotation by mouse or kersor keys, a lot of warning from gnuplot 
appeared on the octave
console

 Warning: Single isoline (scan) is not enough for a pm3d plot.
           Hint: Missing blank lines in the data file? See 'help pm3d' and FAQ.
  Warning: Single isoline (scan) is not enough for a pm3d plot.
           Hint: Missing blank lines in the data file? See 'help pm3d' and FAQ.
  Warning: Single isoline (scan) is not enough for a pm3d plot.
           Hint: Missing blank lines in the data file? See 'help pm3d' and FAQ.
  Warning: Single isoline (scan) is not enough for a pm3d plot.
           Hint: Missing blank lines in the data file? See 'help pm3d' and FAQ.
  Warning: Single isoline (scan) is not enough for a pm3d plot.
           Hint: Missing blank lines in the data file? See 'help pm3d' and FAQ.
  Warning: Single isoline (scan) is not enough for a pm3d plot.
      :
      :
I thin that Single isoline case set pm3d is not desirble for gnuplot.

Regards

Tatsuro

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