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------- Additional comments from [EMAIL PROTECTED] Sun Feb 18 21:21:30 +0000 
2007 -------
I have added 2 picture from an article published in the journal "Nature"
depicting this feature.

As stated, this option is often used in academic publishing when dealing with:
 - large variations in the scale
 - need to point out the difference between two values

When wanting to point out the difference between 2 values, the logarithm is much
more useful, because we will have the difference expressed as 1 point, 2 points
or the like (and NOT absolute differences of e.g. 560,000 vs 7,002,500; in this
case the log difference is 1.09, i.e. 5.75 vs 6.85).

One particular field where this is useful is in virology, where viral load is
more accurately represented by the log value: e.g. when measuring the
effectiveness of HIV treatment, we measure the viral load, BUT more important we
need to know the variation in the viral load, and here the logarithm is more
easy to interpret.

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