ncl_gclrwk - Man Page

CALL GCLRWK (WKID, COFL)

#include <ncarg/gks.h>

void gclear_ws(Gint ws_id, Gctrl_flag  ctrl_flag);

WKID

(Integer, Input) - A number identifying the workstation to be cleared. WKID must be the same as that used in some previous GOPWK call.

COFL

(Integer, Input) -  Clear the workstation display  surface. Options are:

0

Check to see if the display surface is empty. If so, do not  issue a clear surface command.

1

Issue a clear surface command whether the surface has been written to or not.

For workstations of type "1" (CGM), GCLRWK is interpreted as a picture  termination in CGM generation. If COFL = 0 and no output primitives have  been written in the current picture, then a call to GCLRWK is a "do  nothing"; otherwise, it generates an END PICTURE element (as well as other  picture initializing elements). If COFL = 1, then a call to GCLRWK  generates an END PICTURE.

For workstations of types "7" or "8" (see the man page for GOPWK for a description of workstation types) clear workstations erases all primitives that appear on the screen.

For all other workstation types, clear workstation simply updates the workstation.

To use GKS routines, load the NCAR GKS-0A library  ncarg_gks.

Online:  gopwk, gacwk, gdawk, gclwk, gclear_ws

Hardcopy:  User's Guide for NCAR GKS-0A Graphics; NCAR Graphics Fundamentals, UNIX Version

Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.