labmod(3NCARG)
NAME
LABMOD - Presets parameters controlling the appearance of labels drawn by GRIDAL, GRIDL,... et al. LABMOD itself does no plotting and, in order to have any effect, must be called prior to the background- drawing routines for which it is presetting parameters.
SYNOPSIS
CALL LABMOD (FMTX, FMTY, NUMX, NUMY, ISZX, ISZY, IXDC,
+ IYDC, IXOR)
C-BINDING SYNOPSIS
#include <ncarg/ncargC.h> void c_labmod (char *fmtx, char *fmty, int numx, int numy, int iszx, int iszy, int ixdc, int iydc, int ixor)
DESCRIPTION
FMTX and FMTY
(input expressions of type CHARACTER) contain format
specifications for the X-axis and Y-axis numerical labels
produced by GRIDAL, GRIDL, HALFAX, or PERIML. The
specification must begin with a left parenthesis and end
with a right parenthesis and must not be more than ten
characters long. Conversions of types E, F, G, and I are
allowed; for example, one might use FMTX=(F8.2) and
FMTY=(E10.0). The default for both formats is (E10.3).
NOTE: I formats are allowed by this version of Gridall;
they were not allowed by previous versions.
NUMX (an input expression of type INTEGER), if non-zero, is the
number of characters in each X-axis numeric label; if LBLX
is a string produced by the format FMTX, then the label
will be the substring LBLX(1:NUMX). If NUMX is 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 NUMX causes the labels to be centered differently than
if a zero value is used. The default value for NUMX is 0.
NUMY (an input expression of type INTEGER) is defined just like
NUMX, but applies to Y-axis numeric labels.
ISZX and ISZY
(input expressions of type INTEGER) are character sizes for
the labels, specified in plotter address units, just as for
the SPPS routines PWRIT and WTSTR. The default value for
both is 10.
IXDC (an input expression of type INTEGER) is the decrement, in
plotter address units (PAUs - by default, the plotter frame
is 1023 PAUs in width and height), from the left edge of
the current viewport to the nearest X address of the label
specified by FMTY, NUMY, and ISZY. For example, if the
horizontal extent of the current viewport is defined by the
normalized device coordinates .1 and .9, and if IXDC is 60,
and if there has been no call to the SPPS routine SETI
(which can change the size of a PAU), then labels on the Y
axis will end at plotter coordinate 43 (.1*1023+1-60).
Negative values may be used to put labels on the other side
of the viewport; in the example given, changing IXDC to
-878 (-.8*1023 -60) would put the labels on the right side
of the viewport, with their left edges 60 plotter-
coordinate units away from the edge of the viewport. There
are two special values of IXDC:
* If IXDC=0, the Y-axis labels will end 20 plotter
address units to the left of the viewport
(equivalent to using IXDC=20).
* If IXDC=1, Y-axis labels will begin 20 plotter
address units to the right of the viewport
(equivalent to using IXDC=-20-w, where w is the
width of the viewport, in plotter address units).
The default value of IXDC is 20.
When HALFAX is called or when GRIDAL is called with IGPH =
2, 6, or 10, IXDC is the distance from the Y axis, rather
than from the minimum viewport coordinate, and the special
values 0 and 1 are equivalent to 20 and -20.
IYDC (an input expression of type INTEGER) is the decrement, in
plotter address units (PAUs - by default, the plotter frame
is 1023 PAUs in width and height), from the bottom edge of
the current viewport to the nearest Y address of the label
specified by FMTX, NUMX, and ISZX. Note that negative
values may be used to put labels above the viewport. There
are two special values of IYDC:
* If IYDC=0, the top of the X-axis labels will be 20
plotter address units below the bottom edge of the
viewport (equivalent to using IYDC=20).
* If IYDC=1, the bottom of the X-axis labels will be
20 plotter address units above the top edge of the
viewport (equivalent to using IYDC=-20-h, where h is
the height of the viewport, in plotter address
units).
The default value of IYDC is 20.
When HALFAX is called or when GRIDAL is called with IGPH =
8, 9, or 10, IYDC is the distance from the X axis, rather
than from the minimum viewport coordinate, and the special
values 0 and 1 are equivalent to 20 and -20.
IXOR (an input expression of type INTEGER) specifies the
orientation of the X-axis labels:
* IXOR = 0 implies the use of horizontal labels.
* IXOR = 1 implies the use of vertical labels.
The default orientation is horizontal.
C-BINDING DESCRIPTION
The C-binding argument descriptions are the same as the FORTRAN argument descriptions.
USAGE
This routine allows you to set the current value of Gridall parameters. For a complete list of parameters available in this utility, see the gridall_params man page.
EXAMPLES
Use the ncargex command to see the following relevant examples: bnchmk, tgrida, ccpga, ccpmpxy.
ACCESS
To use LABMOD or c_labmod, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
SEE ALSO
Online: gridall, gridall_params, gacolr, gagetc, gageti, gagetr, gasetc, gaseti, gasetr, grid, gridal, gridl, halfax, perim, periml, tick4, ticks, ncarg_cbind. Hardcopy: NCAR Graphics Contouring and Mapping Tutorial Hardcopy: NCAR Graphics Fundamentals, UNIX Version
COPYRIGHT
Copyright (C) 1987-2009 University Corporation for Atmospheric Research The use of this Software is governed by a License Agreement.
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