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Heavy 3D graph crashing octave

From: rcharan51
Subject: Heavy 3D graph crashing octave
Date: Sun, 7 Feb 2016 23:19:53 -0800 (PST)

I have a problem when I surf plot a big 3d surface. It is not only slow to
interact (just to change the view), many it crashes octave(fltk toolkit,
octave 4.0.0, Win10 64 bit 8GB ram). I think  using gnuplot makes it even

So, Can anyone help me to reduce the data points density to such a extent
that it wont affect the shape of the surface? Is data binning a alternative
for this problem?

FYI the mat file of the surface is 350MB !!

Here are the files ( X Y Z data)

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