gset_char_up_vec (Set character up vector) - specifies the angle at which subsequent text is to be drawn

       To use the GKS C-binding routines, load the ncarg_gks and ncarg_c libraries.

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

UNIX                                               March 1993                           GSET_CHAR_UP_VEC(3NCARG)

       char_up_vec.delta_x
                   (Gfloat, Input) - Gives the X (horizontal) world coordinate of a vector.

       char_up_vec.delta_y
                   (Gfloat, Input) - Gives the Y (vertical) world coordinate of a vector.

             char_up_vec.delta_x = -1.
             char_up_vec.delta_y = 0.
             gset_char_up_vec(&char_up_vec);

       would specify the character up vector as (-1.,0.) and subsequent text written with gtext would be rotated
       90 degrees from normal and would be appropriate for a Y-axis label.

             char_up_vec.delta_x = 1.
             char_up_vec.delta_y = 1..
             gset_char_up_vec(&char_up_vec);

       would  specify the character up vector as (1.,1.) and subsequent text written with gtext would be rotated
       -45 degress from normal.

       gset_char_up_vec  (Set character up vector) - specifies the angle at which subsequent text is to be drawn
       with gtext.

       Online:  gtext(3NCARG),gset_text_path(3NCARG),gset_text_align(3NCARG),gset_text_font_prec(3NCARG),gset_char_ht(3NCARG),gset_char_space(3NCARG),gset_char_expan(3NCARG),gset_colr_rep(3NCARG),gset_text_colr_ind(3NCARG),ginq_text_path(3NCARG),ginq_text_align(3NCARG),ginq_text_font_prec(3NCARG),ginq_char_ht(3NCARG),ginq_char_space(3NCARG),ginq_char_up_vec(3NCARG),ginq_char_expan(3NCARG),plotchar(3NCARG),gks(3NCARG),ncarg_gks_cbind(3NCARG)

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

       #include <ncarg/gks.h>

       void gset_char_up_vec(const Gvec *char_up_vec);

       The coordinates (char_up_vec.delta_x, char_up_vec.delta_y) relative to the  point  (0.,0.)   establish  a
       vector  direction.   This  direction specifies the up direction of individual characters.  This direction
       also specifies the orientation of a text string in that the characters in a string  are  placed  along  a
       line  perpendicular  to  the  character up vector.  By default the character up vector is (0.,1.) so that
       characters are drawn in their normal horizontal orientation.  The magnitude of the up vector is not  used
       so that (0.,23.) is the same as (0.,1.).