Method: Pgplot.pgerrb

Defined in:
ext/rb_pgplot.c

.pgerrb(*args) ⇒ Object

PGERRB – horizontal or vertical error bar

 pgerrb, dir, x, y, err [,tlen]

 dir : direction to plot the error bar relative to the data point.
       One-sided error bar:
         DIR is 1 for +X (X to X+E);
                2 for +Y (Y to Y+E);
                3 for -X (X to X-E);
                4 for -Y (Y to Y-E).
       Two-sided error bar:
         DIR is 5 for +/-X (X-E to X+E);
                6 for +/-Y (Y-E to Y+E).
 x   : world x-coordinates of the data.
 y   : world y-coordinates of the data.
 err : value of error bar distance to be added to the
       data position in world coordinates.
 tlen: length of terminals to be drawn at the ends of the error bar,
as a multiple of the default length.



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# File 'ext/rb_pgplot.c', line 329

static VALUE
  rb_pgplot_pgerrb( int argc, VALUE *argv, VALUE self )
{
  rb_pgplot_errorbar( argc-1, argv+1, 0, NUM2INT(argv[0]) );
  return Qtrue;
}