Graph Software for Scientists and Engineers

Logarithmic Scale

A logarithmic scale uses the logarithm of a physical quantity instead of the quantity itself. Presentation of data on a logarithmic scale can be helpful when the data covers a large range of values; the logarithm reduces this to a more manageable range. The most common form of logarithmic scale (which DPlot also uses) uses base 10 logarithms. The four graphs below show the same 3 curves using different combinations of linear and logarithmic scaling: Y=exp(X), Y=X, and Y=ln(X).
 

Linear X, Linear Y
Linear X, Linear Y
Logarithmic X, Linear Y
Logarithmic X, Linear Y
Linear X, Logarithmic Y
Linear X, Logarithmic Y
Logarithmic X, Logarithmic Y
Logarithmic X, Logarithmic Y

See also:

EXP function
LOG function
LOG10 function
Trigonometric and General Math Functions

 

$
195.
00
 
RUNS ON
Windows 10,
Windows 8,
Windows 7, 2008,
Vista, XP, NT,
ME, 2003, 2000,
Windows 98, 95
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