GSVP (Set viewport) - establishes a rectangular subspace of
normalized device coordinates space. Calls to GSVP are discouraged with NCAR
Graphics. Instead, use the SET subroutine because SET also supports mirror
imaging and log scaling of axes.
CALL GSVP (TRNUM, XMIN, XMAX, YMIN, YMAX)
#include <ncarg/gks.h>
void gset_vp(Gint tran_num, const Glimit *vp_limits);
- TRNUM
- (Integer, Input) - A normalization transformation number. The number of
available transformations is implementation specific. In the case of NCAR
GKS-0A, two normalization transformations are provided:
- 0
- Selects the identity transformation in which both the window and viewport
have the range of 0. to 1. in both coordinate directions. This is the
default normalization transformation for GKS. It is also fixed within GKS;
that is, it is illegal to call GSVP with TRNUM = 0.
- 1
- A normalization transformation in which the viewport is defined by XMIN to
XMAX and YMIN to YMAX.
- XMIN
- (Real, Input) - The left horizontal coordinate of the viewport.
- XMAX
- (Real, Input) - The right horizontal coordinate of the viewport. 0.
≤ XMIN < XMAX ≤ 1.
- YMIN
- (Real, Input) - The bottom vertical coordinate of the viewport.
- YMAX
- (Real, Input) - The top vertical coordinate of the viewport. 0. ≤
YMIN < YMAX ≤ 1.
- Defaults:
- TRNUM = 0, XMIN = 0.0, XMAX = 1.0, YMIN = 0.0, YMAX = 1.0
To use GKS routines, load the NCAR GKS-0A library ncarg_gks.
Online: set, gswn, gselnt, gqclip, gset_vp
Hardcopy: NCAR Graphics Fundamentals, UNIX Version; User's Guide
for NCAR GKS-0A Graphics
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.