Mercurial > hg > octave-lyh
annotate scripts/time/datetick.m @ 16749:c9007267cbf5
Variation of color option layouts with columns packed to the left
* settings-dialog.cc (settings_dialog::read_workspace_colors,
settings_dialog::read_terminal_colors): Add 4 space characters to front of
color description. Set the column stretch for last (blank) column to 10.
| author | Daniel J Sebald <daniel.sebald@ieee.org> |
|---|---|
| date | Tue, 11 Jun 2013 14:02:41 -0500 |
| parents | 8899c785cc99 |
| children | 73dd413f2c3e |
| rev | line source |
|---|---|
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1 ## Copyright (C) 2008-2012 David Bateman |
| 8112 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
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20 ## @deftypefn {Function File} {} datetick () |
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21 ## @deftypefnx {Function File} {} datetick (@var{form}) |
| 8112 | 22 ## @deftypefnx {Function File} {} datetick (@var{axis}, @var{form}) |
| 23 ## @deftypefnx {Function File} {} datetick (@dots{}, "keeplimits") | |
| 24 ## @deftypefnx {Function File} {} datetick (@dots{}, "keepticks") | |
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25 ## @deftypefnx {Function File} {} datetick (@var{hax}, @dots{}) |
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26 ## Add date formatted tick labels to an axis. The axis to apply the |
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27 ## ticks to is determined by @var{axis} which can take the values "x", |
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28 ## "y", or "z". The default value is "x". The formatting of the labels is |
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29 ## determined by the variable @var{form}, which can either be a string or |
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30 ## positive integer that @code{datestr} accepts. |
| 8112 | 31 ## @seealso{datenum, datestr} |
| 32 ## @end deftypefn | |
| 33 | |
| 34 function datetick (varargin) | |
| 35 | |
| 36 [h, varargin, nargin] = __plt_get_axis_arg__ ("datetick", varargin{:}); | |
| 37 | |
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38 oldh = gca (); |
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39 unwind_protect |
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40 axes (h); |
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41 __datetick__ (varargin{:}); |
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42 unwind_protect_cleanup |
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43 axes (oldh); |
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44 end_unwind_protect |
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45 |
| 8112 | 46 endfunction |
| 47 | |
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48 |
| 8112 | 49 %!demo |
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50 %! clf; |
| 8112 | 51 %! yr = 1900:10:2000; |
| 52 %! pop = [76.094, 92.407, 106.461, 123.077 131.954, 151.868, 179.979, ... | |
| 53 %! 203.984, 227.225, 249.623, 282.224]; | |
| 54 %! plot (datenum (yr, 1, 1), pop); | |
| 55 %! title ("US population (millions)"); | |
| 56 %! xlabel ("Year"); | |
| 57 %! datetick ("x", "YYYY"); | |
| 58 | |
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59 %!demo |
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60 %! clf; |
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61 %! yr = 1988:2:2002; |
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62 %! yr = datenum (yr,1,1); |
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63 %! pr = [12.1 13.3 12.6 13.1 13.3 14.1 14.4 15.2]; |
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64 %! plot (yr, pr); |
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65 %! xlabel ("year"); |
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66 %! ylabel ("average price"); |
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67 %! ax = gca; |
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68 %! set (ax, "xtick", datenum (1990:5:2005,1,1)); |
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69 %! datetick (2, "keepticks"); |
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70 %! set (ax, "ytick", 12:16); |
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71 |
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72 ## Remove from test statistics. No real tests possible. |
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73 %!assert (1) |
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74 |
| 8112 | 75 function __datetick__ (varargin) |
| 76 | |
| 77 keeplimits = false; | |
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78 keepticks = false; |
| 8112 | 79 idx = []; |
| 80 for i = 1 : nargin | |
| 81 arg = varargin {i}; | |
| 82 if (ischar (arg)) | |
| 83 if (strcmpi (arg, "keeplimits")) | |
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84 keeplimits = true; |
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85 idx = [idx, i]; |
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86 elseif (strcmpi (arg, "keepticks")) |
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87 keepticks = true; |
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88 idx = [idx, i]; |
| 8112 | 89 endif |
| 90 endif | |
| 91 endfor | |
| 92 | |
| 93 varargin(idx) = []; | |
| 94 nargin = length (varargin); | |
| 95 form = []; | |
| 96 ax = "x"; | |
| 97 | |
| 98 if (nargin != 0) | |
| 99 arg = varargin{1}; | |
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100 if (ischar (arg) && (strcmp (arg, "x") || strcmp (arg, "y") |
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101 || strcmp (arg, "z"))) |
| 8112 | 102 ax = arg; |
| 103 if (nargin > 1) | |
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104 form = varargin{2}; |
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105 varargin(1:2) = []; |
| 8112 | 106 else |
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107 varargin(1) = []; |
| 8112 | 108 endif |
| 109 else | |
| 110 form = arg; | |
| 111 varargin(1) = []; | |
| 112 endif | |
| 113 endif | |
| 114 | |
| 115 ## Don't publish the existence of this variable for use with dateaxis | |
| 116 if (length (varargin) > 0) | |
| 117 startdate = varargin{1}; | |
| 118 else | |
| 119 startdate = []; | |
| 120 endif | |
| 121 | |
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122 if (! isempty (form)) |
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123 if (isnumeric (form)) |
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124 if (! isscalar (form) || floor (form) != form || form < 0) |
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125 error ("datetick: expecting FORM argument to be a positive integer"); |
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126 endif |
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127 elseif (! ischar (form)) |
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128 error ("datetick: expecting valid date format string"); |
| 8112 | 129 endif |
| 130 endif | |
| 131 | |
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132 if (keepticks) |
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133 ticks = get (gca (), strcat (ax, "tick")); |
| 8112 | 134 else |
| 135 ## Need to do our own axis tick position calculation as | |
| 136 ## year, etc, don't fallback on nice datenum values. | |
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137 objs = findall (gca ()); |
| 8112 | 138 xmax = NaN; |
| 139 xmin = NaN; | |
| 140 for i = 1 : length (objs) | |
| 141 fld = get (objs (i)); | |
| 142 if (isfield (fld, strcat (ax, "data"))) | |
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143 xdata = getfield (fld, strcat (ax, "data"))(:); |
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144 xmin = min (xmin, min (xdata)); |
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145 xmax = max (xmax, max (xdata)); |
| 8112 | 146 endif |
| 147 endfor | |
| 148 | |
| 149 if (isnan (xmin) || isnan (xmax)) | |
| 150 xmin = 0; | |
| 151 xmax = 1; | |
| 152 elseif (xmin == xmax) | |
| 153 xmax = xmin + 1; | |
| 154 endif | |
| 155 | |
| 156 N = 3; | |
| 157 if (xmax - xmin < N) | |
| 158 ## Day scale or less | |
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159 if (xmax - xmin < N / 24 / 60 / 60) |
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160 scl = 1 / 24 / 60 / 60; |
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161 elseif (xmax - xmin < N / 24 / 60) |
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162 scl = 1 / 24 / 60; |
| 8112 | 163 else |
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164 scl = 1 / 24; |
| 8112 | 165 endif |
| 166 sep = __calc_tick_sep__ (xmin / scl , xmax / scl); | |
| 167 xmin = sep * floor (xmin / scl / sep); | |
| 168 xmax = sep * ceil (xmax / scl / sep); | |
| 169 nticks = (xmax - xmin) / sep + 1; | |
| 170 xmin *= scl; | |
| 171 xmax *= scl; | |
| 172 else | |
| 173 [ymin, mmin, dmin] = datevec (xmin); | |
| 174 [ymax, mmax, dmax] = datevec (xmax); | |
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175 minyear = ymin + (mmin - 1) / 12 + (dmin - 1) / 12 / 30; |
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176 maxyear = ymax + (mmax - 1) / 12 + (dmax - 1) / 12 / 30; |
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177 minmonth = mmin + (dmin - 1) / 30; |
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178 maxmonth = (ymax - ymin) * 12 + mmax + (dmax - 1) / 30; |
| 8112 | 179 |
| 180 if (maxmonth - minmonth < N) | |
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181 sep = __calc_tick_sep__ (xmin, xmax); |
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182 xmin = sep * floor (xmin / sep); |
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183 xmax = sep * ceil (xmax / sep); |
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184 nticks = (xmax - xmin) / sep + 1; |
| 8112 | 185 elseif (maxyear - minyear < N) |
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186 sep = __calc_tick_sep__ (minmonth , maxmonth); |
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187 xmin = datenum (ymin, sep * floor (minmonth / sep), 1); |
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188 xmax = datenum (ymax, sep * ceil (maxmonth / sep), 1); |
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189 nticks = ceil (maxmonth / sep) - floor (minmonth / sep) + 1; |
| 8112 | 190 else |
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191 sep = __calc_tick_sep__ (minyear , maxyear); |
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192 xmin = datenum (sep * floor (minyear / sep), 1, 1); |
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193 xmax = datenum (sep * ceil (maxyear / sep), 1, 1); |
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194 nticks = ceil (maxyear / sep) - floor (minyear / sep) + 1; |
| 8112 | 195 endif |
| 196 endif | |
| 197 ticks = xmin + [0 : nticks - 1] / (nticks - 1) * (xmax - xmin); | |
| 198 endif | |
| 199 | |
| 200 if (isempty (form)) | |
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201 r = max (ticks) - min (ticks); |
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202 if (r < 10/60/24) |
| 8112 | 203 ## minutes and seconds |
| 204 form = 13; | |
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205 elseif (r < 2) |
| 8112 | 206 ## hours |
| 207 form = 15; | |
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208 elseif (r < 15) |
| 8112 | 209 ## days |
| 210 form = 8; | |
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211 elseif (r < 365) |
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212 ## FIXME -- FORM should be 19 for European users who use dd/mm |
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213 ## instead of mm/dd. How can that be determined automatically? |
| 8112 | 214 ## months |
| 215 form = 6; | |
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216 elseif (r < 90*12) |
| 8112 | 217 ## quarters |
| 218 form = 27; | |
| 219 else | |
| 220 ## years | |
| 221 form = 10; | |
| 222 endif | |
| 223 endif | |
| 224 | |
| 225 if (length (ticks) == 6) | |
| 226 ## Careful that its not treated as a datevec | |
| 227 if (! isempty (startdate)) | |
| 228 sticks = strvcat (datestr (ticks(1:end-1) - ticks(1) + startdate, form), | |
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229 datestr (ticks(end) - ticks(1) + startdate, form)); |
| 8112 | 230 else |
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231 sticks = strvcat (datestr (ticks(1:end-1), form), |
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232 datestr (ticks(end), form)); |
| 8112 | 233 endif |
| 234 else | |
| 235 if (! isempty (startdate)) | |
| 236 sticks = datestr (ticks - ticks(1) + startdate, form); | |
| 237 else | |
| 238 sticks = datestr (ticks, form); | |
| 239 endif | |
| 240 endif | |
| 241 | |
| 242 sticks = mat2cell (sticks, ones (rows (sticks), 1), columns (sticks)); | |
| 243 | |
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244 if (keepticks) |
| 8112 | 245 if (keeplimits) |
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246 set (gca (), strcat (ax, "ticklabel"), sticks); |
| 8112 | 247 else |
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248 set (gca (), strcat (ax, "ticklabel"), sticks, strcat (ax, "lim"), |
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249 [min(ticks), max(ticks)]); |
| 8112 | 250 endif |
| 251 else | |
| 252 if (keeplimits) | |
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253 set (gca (), strcat (ax, "tick"), ticks, strcat (ax, "ticklabel"), sticks); |
| 8112 | 254 else |
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255 set (gca (), strcat (ax, "tick"), ticks, strcat (ax, "ticklabel"), sticks, |
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256 strcat (ax, "lim"), [min(ticks), max(ticks)]); |
| 8112 | 257 endif |
| 258 endif | |
| 259 endfunction | |
| 260 | |
| 261 function [a, b] = __magform__ (x) | |
| 262 if (x == 0) | |
| 263 a = 0; | |
| 264 b = 0; | |
| 265 else | |
| 266 l = log10 (abs (x)); | |
| 267 r = fmod (l, 1); | |
| 268 a = 10 .^ r; | |
| 269 b = fix (l - r); | |
| 270 if (a < 1) | |
| 271 a *= 10; | |
| 272 b -= 1; | |
| 273 endif | |
| 274 if (x < 0) | |
| 275 a = -a; | |
| 276 endif | |
| 277 endif | |
| 278 endfunction | |
| 279 | |
| 280 ## A translation from Tom Holoryd's python code at | |
| 281 ## http://kurage.nimh.nih.gov/tomh/tics.py | |
| 282 function sep = __calc_tick_sep__ (lo, hi) | |
| 283 persistent sqrt_2 = sqrt (2.0); | |
| 284 persistent sqrt_10 = sqrt (10.0); | |
| 285 persistent sqrt_50 = sqrt (50.0); | |
| 286 | |
| 287 ticint = 5; | |
| 288 | |
| 289 ## Reference: Lewart, C. R., "Algorithms SCALE1, SCALE2, and | |
| 290 ## SCALE3 for Determination of Scales on Computer Generated | |
| 291 ## Plots", Communications of the ACM, 10 (1973), 639-640. | |
| 292 ## Also cited as ACM Algorithm 463. | |
| 293 | |
| 294 [a, b] = __magform__ ((hi - lo) / ticint); | |
| 295 | |
| 296 if (a < sqrt_2) | |
| 297 x = 1; | |
| 298 elseif (a < sqrt_10) | |
| 299 x = 2; | |
| 300 elseif (a < sqrt_50) | |
| 301 x = 5; | |
| 302 else | |
| 303 x = 10; | |
| 304 endif | |
| 305 sep = x * 10 .^ b; | |
| 306 endfunction | |
| 307 |