GLN , GLOG

Purpose:

Generates a natural logarithmic series (base e) in accordance with the specified parameters.

Syntax:

GLN(length, spacing, factor, offset)

GLOG(length, spacing, factor, offset)

length

-

An integer, the length of the output series.

spacing

-

A real, the spacing (delta x) between each point on the x-axis.

factor

-

Optional. A real, the expansion factor along the x-axis. Defaults to 1.

offset

-

Optional. A real, the offset along x-axis, specified in radians. Defaults to 0.

Returns:

A series.

Example:

gln(100, 0.1, 2, 5)

 

creates a logarithmic series of 100 points spaced 0.1 x-units apart. This series is also be shifted by five x-units (the offset value) on the x-axis, and compressed by a factor of two.

 

glog(100, 0.1, 2, 5)

 

same as above.

Remarks:

The formula used to generate each point, n, in the series is as follows:

 

y[n] = log(spacing*factor*(n-1) + offset)

 

GLN and GLOG are identical.

See Also:

GLOG10

LOG

LOG10