GRIDAL - Draws any of the supported types of backgrounds. Each of the other background-drawing routines

       To  use GRIDAL or c_gridal, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in
       that order.

       The C-binding argument descriptions are the same as the FORTRAN argument descriptions.

       #include <ncarg/ncargC.h>

       void c_gridal (int mjrx, int mnrx, int mjry, int mnry,
       int ixlb, int iylb, int igph, float xint, float yint)

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

UNIX                                               March 1993                                     GRIDAL(3NCARG)

       MJRX, MNRX, MJRY, and MNRY
                   (input  expressions  of type INTEGER) specify the major and minor divisions of the horizontal
                   (X) and vertical (Y) axes of the current viewport. The meanings of these parameters depend on
                   the current setting of the internal parameter ´LS´ of SPPS:

                   •      If the value of ´LS´ implies that the axis is linear: MJRX(Y) specifies the number  of
                          major  divisions  of the X(Y) axis and MNRX(Y) specifies the number of minor divisions
                          within each major division. In each case, the value specifies  the  number  of  spaces
                          between  grid  lines  or ticks rather than the number of lines or ticks. Including the
                          ones at the ends of the axes, there is always one more major  division  line  or  mark
                          than  the  number  of major divisions specified by MJRX(Y). Similarly, there is always
                          one less minor division line or tick per major  division  than  the  number  of  minor
                          divisions per major division specified by MNRX(Y).

                   •      If  the  value of ´LS´ implies that the axis is logarithmic: Each major division point
                          occurs at a value 10**MJRX(Y) times the previous point. For example, if the minimum X-
                          axis value were 3., the maximum X-axis value 3000. and MJRX 1, then the major division
                          points would be 3., 30., 300., and  3000.  If  MNRX(Y).LE.10,  there  are  nine  minor
                          divisions  within each major division. For example, between 3. and 30., there would be
                          minor division points at 6., 9., 12., .  . . 27. If  MNRX(Y).GT.10.,  minor  divisions
                          are omitted.

       IXLB        (an input expression of type INTEGER) is defined as follows:

                   •      IXLB = -1 implies that no X axis is to be drawn.

                   •      IXLB = 0 implies that the X axis is to be drawn unlabeled.

                   •      IXLB = 1 implies that the X axis is to be drawn and labeled.

       IYLB        (an input expression of type INTEGER) is defined as follows:

                   •      IYLB = -1 implies that no Y axis is to be drawn.

                   •      IYLB = 0 implies that the Y axis is to be drawn unlabeled.

                   •      IYLB = 1 implies that the Y axis is to be drawn and labeled.

       IGPH        (an input expression of type INTEGER) specifies the background type, as follows:

                             IGPH   X axis   Y axis
                             ----   ------   ------
                             0      grid     grid
                             1      grid     perim
                             2      grid     halfax
                             4      perim    grid
                             5      perim    perim
                             6      perim    halfax
                             8      halfax   grid
                             9      halfax   perim
                             10     halfax   halfax

       XINT and YINT
                   (input  expressions  of type REAL), if IGPH has the value 10, are the user coordinates of the
                   point of intersection of the two axes. For other values of IGPH for which one of the axes  is
                   of type HALFAX, XINT and/or YINT specify the position of that axis.

       Use the ncargex command to see the following relevant examples: tgrida, ccpga, ccpmpxy.

       See the gridall man page for a description of all Gridall error messages and/or informational messages.

       GRIDAL - Draws any of the supported types of backgrounds. Each of the other background-drawing routines
       is implemented by a call to GRIDAL.

       Online: gridall, gridall_params, gacolr, gagetc, gageti, gagetr, gasetc,  gaseti,  gasetr,  grid,  gridl,
       halfax, labmod, perim, periml, tick4, ticks, ncarg_cbind.

       Hardcopy: NCAR Graphics Contouring and Mapping Tutorial

       Hardcopy: NCAR Graphics Fundamentals, UNIX Version

        CALL GRIDAL (MJRX, MNRX, MJRY, MNRY, IXLB, IYLB, IGPH,
       + XINT, YINT)

       This routine is part of the Gridall utility in NCAR Graphics.  To see the overview man page for this
       utility, type "man gridall".