To supply optional parameters to
nag_opt_nlp_revcomm (e04ufc) from an external file.
nag_opt_nlp_revcomm_option_set_file (e04udc) may be used to supply values for optional parameters to
nag_opt_nlp_revcomm (e04ufc).
nag_opt_nlp_revcomm_option_set_file (e04udc) reads an external file and each line of the file defines a single optional parameter. It is only necessary to supply values for those arguments whose values are to be different from their default values.
Each optional parameter is defined by a single character string,
consisting of one or more items. The items associated with a given option must be separated by spaces, or equals signs
. Alphabetic characters may be upper or lower case. The string
Print Level = 1
is an example of a string used to set an optional parameter. For each option the string contains one or more of the following items:
| – |
a mandatory keyword; |
| – |
a phrase that qualifies the keyword; |
| – |
a number that specifies an Integer or double value. Such numbers may be up to contiguous characters
which can be read using C's d or g formats, terminated by a space if this is not the last item on the line. |
Blank strings and comments are ignored. A comment begins with an asterisk (*) and all subsequent characters in the string are regarded as part of the comment.
The file containing the options must start with
Begin and must finish with
End. An example of a valid options file is:
Begin * Example options file
Print level = 5
End
Optional parameter settings are preserved following a call to
nag_opt_nlp_revcomm (e04ufc)
and so the keyword
is provided to allow you to reset all the optional parameters to their default values before a subsequent call to
nag_opt_nlp_revcomm (e04ufc).
A complete list of optional parameters, their abbreviations, synonyms and default values is given in
Section 12 in
nag_opt_nlp_revcomm (e04ufc).
None.
Not applicable.
This example solves the same problem as the example for
nag_opt_nlp_revcomm (e04ufc),
but in addition illustrates the use of
nag_opt_nlp_revcomm_option_set_file (e04udc) and
nag_opt_nlp_revcomm_option_set_string (e04uec) to set optional parameters for
nag_opt_nlp_revcomm (e04ufc).