NAME¶

DESCRIPTION¶

In order to access the internal parameters, you must declare the following common blocks for the Surface parameters in your code.

 COMMON /SRFBLK/ LIMU(1024) ,LIML(1024) ,CL(41)     ,NCL        ,
1                LL         ,FACT       ,IROT       ,NDRZ       ,
2                NUPPER     ,NRSWT      ,BIGD       ,UMIN       ,
3                UMAX       ,VMIN       ,VMAX       ,RZERO      ,
4                IOFFP      ,NSPVAL     ,SPVAL      ,BIGEST
 COMMON /SRFIP1/ IFR        ,ISTP       ,IROTS      ,IDRX       ,
1                IDRY       ,IDRZ       ,IUPPER     ,ISKIRT     ,
2                NCLA       ,THETA      ,HSKIRT     ,CHI        ,
3                CLO        ,CINC       ,ISPVAL

Note that not all of the variables declared above are considered user-modifiable parameters. Definitions of only user-modifiable parameters follow:

IFR

-1   Call FRAME first.
 0   Do not call FRAME.


+1   Call FRAME when done (default).
    

ISTP

-1   Draws alternating frames, slightly offset 
     (For movies, IROTS = 0).
 0   Blank frame between for stereo slide (IROTS = 1)
     (default).


+1   Both on same frame. (left picture to left 
     side. IROTS = 0).
     
    

IROTS

 0   +Z in vertical plotting direction (CINE mode)
     (default).


+1   +Z in horizontal plotting direction (COMIC mode).
    

IDRX

+1   Draw lines of constant X (default).
 0   Do not.
    

IDRY

+1   Draw lines of constant Y (default).
 0   Do not.
    

IDRZ

+1   Draw lines of constant Z (contour lines).
 0   Do not (default).
    

IUPPER

+1   Draw upper side of surface.
 0   Draw both sides (default).


-1   Draw lower side.
    

ISKIRT

+1   Draw a skirt around the surface.
     BOTTOM = HSKIRT.
 0   Do not (default).
    

NCLA

     Approximate number of levels of constant Z
     that are drawn if levels are not specified.
     40 is the maximum and 6 is the default.
    

THETA

     The angle in radians between eyes for stereo pairs.
     The default is .02.
    

HSKIRT

     Height of skirt (if ISKIRT = 1). The default is 0.
    

CHI

     Highest level of constant Z. The default is 0.
    

CLO

     Lowest level of constant Z. The default is 0.
    

CINC

     Increment between levels. The default is 0.
    

IOFFP

     Flag to control the use of the special value feature. Do
     not have both IOFFP=1 and ISKIRT=1.
 0   Feature not in use (default).


+1   Feature in use.  No lines are drawn to data points
     that are equal to SPVAL.
    

SPVAL

     Special value used to mark unknown data when 
     IOFFP=1.  The default is 0.
    

SEE ALSO¶

Hardcopy: NCAR Graphics Fundamentals, UNIX Version

COPYRIGHT¶