If in your chart you have some large numbers and use a linear scale, you
won't see differences in small numbers.
try, for example a series like
1
2
1.00E+05
2.00E+05
Plot the series on a linear scale (& see whether you can see the difference
between the first two points), then change it to log.
--
David Biddulph


"Polly" wrote in message
...
I understand how to change the scale on the value axis to logarithmic, I
am
just not sure why I would do so.