## [9003f5]: inst / __axis2dlim__.m  Maximize  Restore  History

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 ``` 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``` ```## Copyright (C) 1998, 2000, 2004, 2005, 2007 ## Auburn University. All rights reserved. ## ## ## 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; see the file COPYING. If not, see ## . ## -*- texinfo -*- ## @deftypefn {Function File} {} __axis2dlim__ (@var{axdata}) ## Determine axis limits for 2-D data (column vectors); leaves a 10% ## margin around the plots. ## Inserts margins of +/- 0.1 if data is one-dimensional ## (or a single point). ## ## @strong{Input} ## @table @var ## @item axdata ## @var{n} by 2 matrix of data [@var{x}, @var{y}]. ## @end table ## ## @strong{Output} ## @table @var ## @item axvec ## Vector of axis limits appropriate for call to @command{axis} function. ## @end table ## @end deftypefn function axvec = __axis2dlim__ (axdata) if (nargin < 1 || isempty (axdata)) axdata = 0; endif ## compute axis limits minv = min (axdata); maxv = max (axdata); delv = (maxv-minv)/2; # breadth of the plot midv = (minv + maxv)/2; # midpoint of the plot axmid = [midv(1), midv(1), midv(2), midv(2)]; axdel = [-0.1, 0.1, -0.1, 0.1]; # default plot width (if less than 2-d data) if (max (delv) == 0) if (midv(1) != 0) axdel(1:2) = [-0.1*midv(1), 0.1*midv(1)]; endif if (midv(2) != 0) axdel(3:4) = [-0.1*midv(2), 0.1*midv(2)]; endif else ## they're at least one-dimensional tolv = max(1e-8, 1e-8*abs(midv)); if (abs (delv(1)) >= tolv(1)) axdel(1:2) = 1.1*[-delv(1),delv(1)]; endif if (abs (delv(2)) >= tolv(2)) axdel(3:4) = 1.1*[-delv(2),delv(2)]; endif endif axvec = axmid + axdel; endfunction ```