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Name: PGQINF

Purpose: inquire PGPLOT general information

Category: GRAPHICS

File: pgplot.src

Author: T.J. Pearson

Use: see description below.

Description:

SUBROUTINE PGQINF (ITEM, VALUE, LENGTH)
CHARACTER*(*) ITEM, VALUE
INTEGER LENGTH

This routine can be used to obtain miscellaneous information about
the PGPLOT environment. Input is a character string defining the
information required, and output is a character string containing the
requested information.

The following item codes are accepted (note that the strings must
match exactly, except for case, but only the first 8 characters are
significant). For items marked *, PGPLOT must be in the OPEN state
for the inquiry to succeed. If the inquiry is unsuccessful, either
because the item code is not recognized or because the information
is not available, a question mark ('?') is returned.

'VERSION' - version of PGPLOT software in use.
'STATE' - status of PGPLOT ('OPEN' if a graphics device
is open for output, 'CLOSED' otherwise).
'USER' - the username associated with the calling program.
'NOW' - current date and time (e.g., '17-FEB-1986 10:04').
'DEVICE' * - current PGPLOT device or file.
'FILE' * - current PGPLOT device or file.
'TYPE' * - device-type of the current PGPLOT device.
'DEV/TYPE' * - current PGPLOT device and type, in a form which
is acceptable as an argument for PGBEG.
'HARDCOPY' * - is the current device a hardcopy device? ('YES' or
'NO').
'TERMINAL' * - is the current device the user's interactive
terminal? ('YES' or 'NO').
'CURSOR' * - does the current device have a graphics cursor?
('YES' or 'NO').
'SCROLL' * - does current device have rectangle-scroll
capability ('YES' or 'NO'); see PGSCRL.

Arguments:
ITEM (input) : character string defining the information to
be returned; see above for a list of possible
values.
VALUE (output) : returns a character-string containing the
requested information, truncated to the length
of the supplied string or padded on the right with
spaces if necessary.
LENGTH (output): the number of characters returned in VALUE
(excluding trailing blanks).

Updates: Oct 16, 1998: JPT automatically extracted from source.