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Date: Mon, 17 Sep 2012 18:34:55 -0700 (PDT)
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Subject: Re: zoom in 3d plots for netbooks/laptops
From: Anthony Falzone <propdesign71@gmail.com>
Cc: sfeam@users.sourceforge.net
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Xref: csiph.com comp.graphics.apps.gnuplot:1384

On Monday, September 17, 2012 4:59:37 PM UTC-5, Anthony Falzone wrote:
> On Monday, September 17, 2012 11:45:46 AM UTC-5, sfeam wrote:
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> > Anthony Falzone wrote:
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> > > one thing i found
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> > > in a previous forum topic would be really nice to implement as well. =
 that
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> > > being xrange=3Dyrange.  so that 2d plots are scaled properly when you=
 don't
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> > > already know the scales involved.  that or being able to do stuff lik=
e set
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> > > xrange [ymin:ymax]. same effect.
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> > 2D command:
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> > 	set size ratio 1.0
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> >   or      set size square
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> > 3D command:
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> > 	set view equal xy
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> >   or	set view equal xyz
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> > However, these commands work only if the output device correctly report=
s
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> > the aspect ratio of its display area.   Not all terminal types do this.
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> > For instance, the above commands will work correctly in the qt or wxt
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> > interactive terminals, but not in x11.
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> thanks i was not aware of the set size square command.  that is helpful i=
n some cases, however, it isn't helping my issue.  i have an airfoil shape =
and the view is distorted unless the xrange and yrange are the same.  in 3d=
 i do use the view equal xyz and that works to keep the propeller blade geo=
metry looking correct.  however, as i mentioned i can't seem to zoom and pa=
n the way i need to view the model good, due to its long aspect ratio.

i made a work around.  i wrote the *.plt entirely in Fortran 77. i just add=
ed some code to the one i was using the generate the *.dat file.  this allo=
wed me to scale the axes as needed.  the reason i made this plot was to get=
 around the 3d zoom problem.  so i can now view all the geometry. some in 3=
d and the rest in 2d. here is some of the code in case anyone is interested=
.

CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C     CREATING GNUPLOT *.PLT FILE FOR AIRFOIL CURVES
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
      ZMIN =3D 1.10D0 * 1000.0D0 * ( 0.250D0 *
     & CHORD(1) - ( ( CHORD(1) / 100.0D0 ) * AFXTAB(25) ) )
C
      WRITE (20,*) 'reset'
C
      WRITE (20,*) 'set grid'
C
      WRITE (20,*) 'unset key'
C
      WRITE (20,*) 'set title "Airfoil Curves" font "*,14"'
C
      WRITE (20,*) 'set xlabel "Y-Axis [mm]"'
C
      WRITE (20,*) 'set ylabel "Z-Axis [mm]"'
C
      WRITE (20,*) 'set xrange [', DINT(ZMIN), ':', DINT(-ZMIN), ']'
C
      WRITE (20,*) 'set yrange [', DINT(ZMIN), ':', DINT(-ZMIN), ']'
C
      WRITE (20,*) 'set size square'
C
      WRITE (20,*) 'unset pm3d'
C
      WRITE (20,*) 'set lt 1 lw 1.0 pt 7 ps .8 lc rgb "black"'
C
      WRITE (20,*) 'set lt 2 lw 1.0 pt 7 ps .8 lc rgb "black"'
C
      FN1 =3D '''AIRFOIL_CURVE_A.XYZ'
C
      FN2 =3D '''AIRFOIL_CURVE_B.XYZ'
C
      WRITE (20,*) 'plot ', FN1, ''' using 2:3 smooth bezier with',
     & ' lines,\'
C
      WRITE (20,*) '     ', FN2, ''' using 2:3 smooth bezier with',
     & ' lines'
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

if you could still consider my requests, they would be most helpful.  this =
is just a work around given the current state of gnuplot (version 4.6.0).