EXPON - Takes the exponential (specified base) of an NDF data structure

Description:

This routine takes the exponential to a specified base of each pixel of a NDF  to produce a new NDF data structure.

Usage:

expon in out base

Parameters:

BASE = LITERAL (Read)

The base of the exponential to be applied. A special value "Natural" gives natural (base-e) exponentiation.

IN = NDF (Read)

Input NDF data structure.

OUT = NDF (Write)

Output NDF data structure being the exponential of the input NDF.

TITLE = LITERAL (Read)

The title for the output NDF. A null value will cause the title of the NDF supplied for Parameter IN to be used instead. [!]

Examples:

expon a b 10

This takes exponentials to base ten of the pixels in the NDF called a, to make the NDF called b. NDF b inherits its title from a.

expon base=8 title="HD123456" out=b in=a

This takes expoentials to base eight of the pixels in the NDF called a, to make the NDF called b. NDF b has the title "HD123456".

Related Applications :

KAPPA: LOG10, LOGAR, LOGE, EXP10, EXPE, POW; FIGARO: IALOG, ILOG, IPOWER.

Implementation Status:

• This routine correctly processes the AXIS, DATA, QUALITY, LABEL, TITLE, UNITS, HISTORY, WCS, and VARIANCE  components of an NDF data structure and propagates all extensions.

• Processing of bad pixels and automatic quality masking are supported.

• All non-complex numeric data types can be handled.