[R] engineering notation format

From: Walker, Sam <s-walker_at_ti.com>
Date: Fri 07 Jul 2006 - 07:58:21 EST


How can I format numbers to engineering notation?

That is, like scientific but where the exponent is always a multiple of three.

Some examples:

1635 000 000      => 1.635E9
  163 500 000     => 163.5E6
0.000 000 000 135 => 135E-9

I've tried format and formatC but I couldn't get them to work they I want.

Any help is greatly appreciated.


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