/usr/share/octave/packages/financial-0.4.0/dateaxis.m is in octave-financial 0.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | ## Copyright (C) 2008 Bill Denney <bill@denney.ws>
##
## This program is free software; you can redistribute it and/or modify it under
## the terms of the GNU General Public License as published by the Free Software
## Foundation; either version 3 of the License, or (at your option) any later
## version.
##
## This program is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
## details.
##
## You should have received a copy of the GNU General Public License along with
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} dateaxis ()
## @deftypefnx {Function File} {} dateaxis (@var{ax})
## @deftypefnx {Function File} {} dateaxis (@var{ax}, @var{dateform})
## @deftypefnx {Function File} {} dateaxis (@var{ax}, @var{dateform}, @var{startdate})
## @deftypefnx {Function File} {} dateaxis (@var{h}, ...)
##
## Convert the current axis tick labels (or the axis handle @var{h}) to
## a date format. The axis given by @var{ax} ("x", "y", or "z") will be
## changed; the default is "x". The date format, @var{dateform}, used
## will be either auto-determined or an integer corresponding to the
## date formats in datestr. If @var{startdate} is given, then the first
## tick value on the given axis is assumed to be that date.
##
## @seealso{bolling, candle, highlow, movavg, pointfig}
## @end deftypefn
function dateaxis (varargin)
## defaults
h = [];
ax = "x";
dateform = [];
startdate = [];
## check inputs
if nargin > 0
if ishandle(varargin{1})
h = varargin{1};
varargin(1) = [];
endif
if length(varargin) > 0
ax = varargin{1};
endif
if length(varargin) > 1
dateform = varargin{2};
endif
if length(varargin) > 2
startdate = varargin{3};
if ischar(startdate)
startdate = datenum(startdate);
elseif !isnumeric(startdate)
error ("dateaxis: startdate must be either a datenum or numeric")
endif
endif
if length(varargin) > 3
print_usage ();
endif
endif
if (isempty (h))
h = gca ();
endif
if isempty(dateform)
r = range(get(h, [ax "lim"]));
if r < 10/60/24
## minutes and seconds
dateform = 13;
elseif r < 2
## hours
dateform = 15;
elseif r < 15
## days
dateform = 8;
elseif r < 365
## months
dateform = 6;
elseif r < 90*12
## quarters
dateform = 27;
else
## years
dateform = 10;
endif
endif
ticks = get (h, [ax "tick"]);
if (!isempty (startdate))
ticks = ticks - ticks(1) + startdate;
endif
ticks = datestr(ticks, dateform);
ticks = mat2cell(ticks, ones(size(ticks,1),1), size(ticks,2));
set (h, [ax "ticklabel"], ticks);
endfunction
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