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Excel - why use a logarithmic scale in a chart?



 
 
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  #1  
Old April 9th, 2010, 01:46 PM posted to microsoft.public.excel.charting
Polly
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Posts: 33
Default Excel - why use a logarithmic scale in a chart?

I understand how to change the scale on the value axis to logarithmic, I am
just not sure why I would do so.
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  #2  
Old April 9th, 2010, 01:52 PM posted to microsoft.public.excel.charting
Luke M[_4_]
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Posts: 451
Default Excel - why use a logarithmic scale in a chart?

Usually helpful when:
a) Trying to plot exponential series (such as in calculus, some physics,
etc)
b) Trying to distort data so your customers don't see how badly your company
is losing money *grin*

--
Best Regards,

Luke M
"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.



  #3  
Old April 9th, 2010, 05:22 PM posted to microsoft.public.excel.charting
David Biddulph
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Posts: 8,714
Default Excel - why use a logarithmic scale in a chart?

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.



 




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