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NAME

       Gridall_params - This document briefly describes all Gridall internal parameters.

DESCRIPTION

       GRIDAL has twenty-two internal parameters, each of which affects, in some way, the
       behavior of the routines that draw backgrounds. The current value of a parameter may be
       retrieved by calling GAGETC, GAGETI, and/or GAGETR and it may be reset by calling GASETC,
       GASETI, and/or GASETR; certain parameters may also be reset by calling other, older,
       routines (GACOLR, LABMOD, TICKS, and TICK4).

       Parameter descriptions, in alphabetical order, of all Gridall internal parameters follow.
       Each description begins with a line giving the parameter name and the intrinsic FORTRAN
       type of the parameter.

       ´CAX´ - Integer
              The polyline color index to be used for drawing the axes. A negative value implies
              that no change is to be made in the polyline color index before drawing the axes.
              The default value of ´CAX´ is -1; its value may be changed by calling GASETI,
              GASETR, or GACOLR (argument KAXS) .

       ´CLB´ - Integer
              The polyline/text color index to be used for drawing labels. (Both are affected
              because the labels may be drawn using calls to WTSTR or calls to PLCHHQ.) A
              negative value implies that no change is to be made in the polyline and text color
              indices before drawing the labels. The default value of ´CLB´ is -1; its value may
              be changed by calling GASETI, GASETR, or GACOLR (argument KLBL).

       ´CMJ´ - Integer
              The polyline color index to be used for major ticks and/or grid lines. A negative
              value implies that no change is to be made in the polyline color index before
              drawing major ticks/grid lines. The default value of ´CMJ´ is -1; its value may be
              changed by calling GASETI, GASETR, or GACOLR (argument KMJT).

       ´CMN´ - Integer
              The polyline color index to be used for minor ticks and/or grid lines. A negative
              value implies that no change is to be made in the polyline color index before
              drawing minor ticks/grid lines. The default value of ´CMN´ is -1; its value may be
              changed by calling GASETI, GASETR, or GACOLR (argument KMNT).

       ´LTY´ - Integer
              The labeling type. The value 0 implies that the SPPS routine WTSTR is to be called
              to draw labels, the value 1 that the Plotchar routine PLCHHQ is to be called. The
              default value of ´LTY´ is 0; its value may be changed by calling GASETI or GASETR.

       ´WAX´ - Real
              The line width to be used for drawing the axes. A value less than or equal to zero
              implies that no change is to be made in the line width scale factor before drawing
              the axes. The default value of ´WAX´ is 0; its value may be changed by calling
              GASETI or GASETR.

       ´WLB´ - Real
              The line width to be used for drawing labels. (Labels drawn using calls to the
              Plotchar routine PLCHHQ are affected by this; those drawn using calls to the SPPS
              routine WTSTR are not.) A value less than or equal to zero implies that no change
              is to be made in the line width scale factor before drawing the labels. The default
              value of ´WLB´ is 0; its value may be changed by calling GASETI or GASETR.

       ´WMJ´ - Real
              The line width to be used for major ticks and/or grid lines. A value less than or
              equal to zero implies that no change is to be made in the line width scale factor
              before drawing. The default value of ´WMJ´ is 0; its value may be changed by
              calling GASETI or GASETR.

       ´WMN´ - Real
              The line width to be used for minor ticks and/or grid lines. A value less than or
              equal to zero implies that no change is to be made in the line width scale factor
              before drawing. The default value of ´WMN´ is 0; its value may be changed by
              calling GASETI or GASETR.

       ´XLF´ - Character
              The format to be used for labels on the X axis. The character string must begin
              with a left parenthesis and end with a right parenthesis and it must not exceed ten
              characters in length.  Conversions of types E, F, G, and I are allowed. The default
              value of ´XLF´ is ´(E10.3)´; its value may be changed by calling GASETC or LABMOD
              (argument FMTX).

       ´XLL´ - Integer
              The length of each X-axis label. If ´XLL´ is given a non-zero value "n" and LBLX is
              a string produced by the format ´XLF´, then the label will be the substring
              LBLX(1:n). If, on the other hand, ´XLL´ = 0, then the label will be the substring
              LBLX(m:n), where LBLX(m:m) is the first non-blank character in LBLX and LBLX(n:n)
              is the last non-blank character following LBLX(m:m). Using a non-zero value for
              ´XLL´ causes labels to be centered differently than if a zero value is used. The
              default value of ´XLL´ is 0; its value may be changed by calling GASETI, GASETR, or
              LABMOD (argument NUMX).

       ´XLO´ - Real
              The (vertical) distance of an X-axis label from the X axis. Values between 0 and 1
              are interpreted as fractions of the width of the plotter frame, while values
              greater than 1 are interpreted as plotter address units (PAUs). The value is
              interpreted as the distance from the bottom edge of the viewport to the nearest Y
              address of an X-axis label; negative values may be used to put labels above the
              viewport. The value 0 is treated as equivalent to 20 and the value 1 is treated as
              equivalent to -20-h, where h is the height of the viewport in plotter address
              units. The default value of ´XLO´ is 20, which means 20 PAUs; its value may be
              changed by calling GASETI, GASETR, or LABMOD (argument IYDC).  (Note that the
              LABMOD argument IXDC corresponds to ´YLO´ and that the LABMOD argument IYDC
              corresponds to ´XLO´, which is perhaps somewhat counterintuitive.)

       ´XLS´ - Real
              The size (width) of characters in X-axis labels. Values between 0 and 1 are
              interpreted as fractions of the width of the plotter frame, while values greater
              than or equal to 1 are interpreted as plotter address units (PAUs). The integral
              values 0., 1., 2., and 3. mean 8, 12, 16, and 24 PAUs, respectively. Values less
              than zero are treated as zero. The default value of ´XLS´ is 10, which means 10
              PAUs; its value may be changed by calling GASETI, GASETR, or LABMOD (argument
              ISZX).

       ´XMJ´ - Real
              The length of major ticks on the X axis.  ABS(´XMJ´) specifies the length of major
              ticks on the X axis; values between 0 and 1 are interpreted as fractions of the
              width of the plotter frame, while values greater than or equal to 1 are interpreted
              as plotter address units (PAUs). If ´XMJ´ is positive, the ticks point inward; if
              ´XMJ´ is negative, the ticks point outward. The default value of ´XMJ´ is 12, which
              means 12 PAUs; its value may be changed by calling GASETI, GASETR, or TICKS
              (argument LMJX).

       ´XMN´ - Real
              The length of minor ticks on the X axis. ABS(´XMN´) specifies the length of minor
              ticks on the X axis; values between 0 and 1 are interpreted as fractions of the
              width of the plotter frame, while values greater than or equal to 1 are interpreted
              as plotter address units (PAUs). If ´XMN´ is positive, the ticks point inward; if
              ´XMN´ is negative, the ticks point outward. The default value of ´XMN´ is 8, which
              means 8 PAUs; its value may be changed by calling GASETI, GASETR, or TICKS
              (argument LMNX).

       ´XOR´ - Integer
              The orientation of X-axis labels. The value 0 implies the use of horizontal labels,
              while the value 1 implies the use of vertical labels. The default value is 0; its
              value may be changed by calling GASETI, GASETR, or LABMOD (argument IXOR).

       ´YLF´ - Character
              The format to be used for labels on the Y axis. The character string must begin
              with a left parenthesis and end with a right parenthesis and it must not exceed ten
              characters in length.  Conversions of types E, F, G, and I are allowed. The default
              value of ´YLF´ is ´(E10.3)´; its value may be changed by calling GASETC or LABMOD
              (argument FMTY).

       ´YLL´ - Integer
              The length of each Y-axis label. If ´YLL´ is given a non-zero value "n" and LBLY is
              a string produced by the format ´YLF´, then the label will be the substring
              LBLY(1:n). If, on the other hand, ´YLL´ = 0, then the label will be the substring
              LBLY(m:n), where LBLY(m:m) is the first non-blank character in LBLY and LBLY(n:n)
              is the last non-blank character following LBLY(m:m). Using a non-zero value for
              ´YLL´ causes labels to be centered differently than if a zero value is used. The
              default value of ´YLL´is 0; its value may be changed by calling GASETI, GASETR, or
              LABMOD (argument NUMY).

       ´YLO´ - Real
              The (horizontal) offset distance of a Y-axis label from the Y axis. Values between
              0 and 1 are interpreted as fractions of the width of the plotter frame, while
              values greater than 1 are interpreted as plotter address units (PAUs). The value is
              interpreted as the distance from the left edge of the viewport to the nearest X
              address of a Y-axis label; negative values may be used to put labels to the right
              of the viewport. The value 0 is treated as equivalent to 20 and the value 1 is
              treated as equivalent to -20-w, where w is the width of the viewport in plotter
              address units. The default value of ´YLO´ is 20, which means 20 PAUs; its value may
              be changed by calling GASETI, GASETR, or LABMOD (argument IXDC).  (Note that the
              LABMOD argument IXDC corresponds to ´YLO´ and that the LABMOD argument IYDC
              corresponds to ´XLO´, which is perhaps somewhat counterintuitive.)

       ´YLS´ - Real
              The size (width) of characters in Y-axis labels. Values between 0 and 1 are
              interpreted as fractions of the width of the plotter frame, while values greater
              than or equal to 1 are interpreted as plotter address units (PAUs). The integral
              values 0., 1., 2., and 3. mean 8, 12, 16, and 24 PAUs, respectively. Values less
              than zero are treated as zero. The default value of ´YLS´ is 10, which means 10
              PAUs; its value may be changed by calling GASETI, GASETR, or LABMOD (argument
              ISZY).

       ´YMJ´ - Real
              The length of major ticks on the Y axis.  ABS(´YMJ´) specifies the length of major
              ticks on the Y axis; values between 0 and 1 are interpreted as fractions of the
              width of the plotter frame, while values greater than or equal to 1 are interpreted
              as plotter address units (PAUs). If ´YMJ´ is positive, the ticks point inward; if
              ´YMJ´ is negative, the ticks point outward. The default value of ´YMJ´ is 12, which
              means 12 PAUs; its value may be changed by calling GASETI, GASETR, or TICKS
              (argument LMJY).

       ´YMN´ - Real
              The length of minor ticks on the Y axis. ABS(´YMN´) specifies the length of minor
              ticks on the Y axis; values between 0 and 1 are interpreted as fractions of the
              width of the plotter frame, while values greater than or equal to 1 are interpreted
              as plotter address units (PAUs). If ´YMN´ is positive, the ticks point inward; if
              ´YMN´ is negative, the ticks point outward. The default value of ´YMN´ is 8, which
              means 8 PAUs; its value may be changed by calling GASETI, GASETR, or TICKS
              (argument LMNY).

SEE ALSO

       Online: gridall, gacolr, gagetc, gageti, gagetr, gasetc, gaseti, gasetr, labmod, tick4,
       ticks.

       Hardcopy: NCAR Graphics Fundamentals, UNIX Version

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       University Corporation for Atmospheric Research
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