axis.compute.time.breaks(pos, min.span=NULL, mkt.oc=TRUE,
align=TRUE, by.align=NULL, k.by.align=NULL)
min.span.
If
NULL, the default is selected from
axis.break.table based
on
min(diff(pos))
TRUE or
FALSE to determine whether daily market opening and closing
times to use as axis breaks should be estimated from
pos;
can also be a list (or data frame)
with
open and
close components (columns) giving the regular
opening and closing
times of the market to use for generating axis breaks.
The times are given as time span objects, representing the time after
midnight for the daily openings and closings of the market.
TRUE, the break intervals are extended so that the
intervals are aligned according to
by.align and
k.by.align.
align is
TRUE.
Possible values are
"years",
"quarters",
"months",
"weeks",
"days",
"hours",
"minutes",
"minutes",
"seconds", or
"milliseconds".
If
NULL, the default is selected from
axis.break.table based
on
min(diff(pos))
by.align units for aligning.
If
NULL, the default is selected from
axis.break.table based
on
min(diff(pos))
open and
close components, giving the market open
and close times to use in axis breaks.
This function is intended for internal use by the time series graphics
functions and is called by
axis.time.build.