PCLOQU - Draws characters of "low quality" by calling
the GKS character-drawing routines. No function codes may be used. Using
PCLOQU to draw a given string of characters will create a smaller metafile
than if PCHIQU or PCMEQU were used; the results will depend on capabilities
of the translator.
PLCHLQ is an alternate name for the routine PCLOQU.
CALL PCLOQU (XPOS,YPOS,CHRS,SIZE,ANGD,CNTR)
#include <ncarg/ncargC.h>
void c_pcloqu (float xpos, float ypos, char *chrs,
float size, float angd, float cntr)
- XPOS,YPOS
- (input expressions of type REAL) specify positioning coordinates for the
characters to be drawn. If the internal parameter ´MA´ has
the value 0, these are given in the current user coordinate system;
otherwise, they are given in an arbitrary X/Y coordinate system, as
implied by the value of ´MA´ and the nature of the routine
CPMPXY. (For example, if ´MA´ has the value 1 and the
default version of CPMPXY is being used, then XPOS is a longitude, in
degrees, and YPOS is a latitude, in degrees.) The argument CNTR (described
below) specifies how the characters are to be positioned relative to the
point (XPOS,YPOS).
- CHRS
- (an input constant or variable of type CHARACTER) contains a character
string to be drawn. The number of characters in CHRS is taken to be
LEN(CHRS); to use characters "m" through "n" from a
character variable CHRS, use the FORTRAN-77 substring notation
"CHRS(m:n)". The string may include any of the 95 characters
space, exclamation point, double quote, pound sign, dollar sign, percent
sign, ampersand, apostrophe, left parenthesis, right parenthesis,
asterisk, plus sign, comma, minus sign, period, slash, 0-9, colon,
semi-colon, less than sign, equals sign, greater than sign, question mark,
at sign, A-Z, left square bracket, backslash, right square bracket, hat,
underscore, backwards quote, a-z, left curly bracket, vertical bar, right
curly bracket, and tilde. Function codes, like those in calls to PCHIQU,
may not be used.
- SIZE
- (an input expression of type REAL) specifies the desired character size.
If the internal parameter ´MA´ is zero, then the following
comments apply:
- If SIZE is less than or equal to zero, its absolute value specifies the
size as a multiple of a default digitized size on a 1024x1024 grid, on
which blanks are 16 units wide.
- If SIZE is greater than zero, but less than one, it specifies the desired
width of a blank as a fraction of the distance across the plotter frame.
This is the recommended scheme.
- If SIZE is greater than or equal to one, it specifies the desired width of
a blank in plotter coordinates, as defined by default or by a
user´s call to the SPPS routine SETI. Note that use of the routine
SETI is now discouraged.
-
- If ´MA´ is nonzero, then SIZE is the desired width of a
blank as a value in the X/Y coordinate system in which XPOS and YPOS are
given.
Note that SIZE is defined in such a way as to be consistent
with PCHIQU.
- ANGD
- (an input expression of type REAL) is the angle, in degrees
counterclockwise from the positive X axis, at which the character string
is to be written.
- CNTR
- (an input expression of type REAL) is the centering option, as
follows:
- CNTR < 0. means that (XPOS,YPOS) is the center of the left edge of the
first character.
- CNTR > 0. means that (XPOS,YPOS) is the center of the right edge of the
last character.
- CNTR = 0. means that (XPOS,YPOS) is the midpoint of the string.
-
- Note that this argument is not quite the same as that for PCHIQU (though
it does include the three most useful cases).
Upon return from PCLOQU, all arguments are unchanged.
The C-binding argument descriptions are the same as the FORTRAN
argument descriptions.
Use the ncargex command to see the following relevant examples:
arex01, tcnqck, tcnsmt, tcnsup, tconre, tezmap, tgflas, tgrida, thafto,
thstgr, tisohr, tisosr, tlblba, tpltch, tpwrzi, tpwrzs, tsoftf, tstrml,
tthree, tvelvc.
To use PCLOQU or c_pcloqu, load the NCAR Graphics libraries ncarg,
ncarg_gks, and ncarg_c, preferably in that order.
Online: plotchar, pcdlsc, pcgetc, pcgeti, pcgetr, pchiqu, pcmequ,
pcmpxy, pcpnwi, pcrset, pcsetc, pcseti, pcsetr, ncarg_cbind.
Hardcopy: NCAR Graphics Fundamentals, UNIX Version
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.