Center All Graphics

[Chris Rackauckas]

Hello,
  I am trying to create a modification that will center all graphics
automatically. How would I go about doing this? I tried
adding \usepackage{floatrow} to the LaTeX preamble but this only centers
graphics put into floats. Any ideas?
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Chris Rackauckas
University of California, Irvine
Department of Mathematics
www.chrisrackauckas.com