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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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18 ## 02111-1307, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} multiplot (@var{xn}, @var{yn}) |
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22 ## Sets and resets multiplot mode. |
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23 ## |
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24 ## If the arguments are non-zero, @code{multiplot} will set up multiplot |
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25 ## mode with @var{xn}, @var{yn} subplots along the @var{x} and @var{y} |
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26 ## axes. If both arguments are zero, @code{multiplot} closes multiplot |
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27 ## mode. |
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28 ## @end deftypefn |
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29 |
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30 ## Author: Vinayak Dutt, Dutt.Vinayak@mayo.EDU |
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31 ## Created: 3 July 95 |
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32 ## Adapted-By: jwe |
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33 |
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34 function multiplot (xn, yn) |
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35 |
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36 if (! gnuplot_has_multiplot) |
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37 error ("multiplot: gnuplot does not appear to support this feature"); |
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38 endif |
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39 |
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40 ## global variables to keep track of multiplot options |
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41 |
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42 global __multiplot_mode__ = 0; |
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43 global __multiplot_xsize__; |
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44 global __multiplot_ysize__; |
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45 global __multiplot_xn__; |
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46 global __multiplot_yn__; |
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47 global __multiplot_xi__; |
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48 global __multiplot_yi__; |
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49 |
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50 if (nargin != 2) |
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51 usage ("multiplot (xn, yn)"); |
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52 endif |
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53 |
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54 if (! (is_scalar (xn) && is_scalar (yn))) |
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55 error ("multiplot: xn and yn have to be scalars"); |
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56 endif |
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57 |
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58 xn = round (xn); |
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59 yn = round (yn); |
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60 |
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61 if (xn == 0 && yn == 0) |
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62 |
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63 oneplot (); |
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64 |
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65 ## XXX FIXME XXX -- do we really need to reset these here? |
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66 |
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67 __multiplot_xsize__ = 1; |
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68 __multiplot_ysize__ = 1; |
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69 __multiplot_xn__ = 1; |
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70 __multiplot_yn__ = 1; |
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71 __multiplot_xi__ = 1; |
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72 __multiplot_yi__ = 1; |
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73 |
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74 else |
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75 |
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76 if (xn < 1 || yn < 1) |
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77 error ("multiplot: xn and yn have to be positive integers"); |
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78 endif |
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79 |
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80 gset multiplot; |
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81 |
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82 xsize = 1.0 ./ xn; |
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83 ysize = 1.0 ./ yn; |
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84 |
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85 eval (sprintf ("gset size %g, %g", xsize, ysize)); |
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86 |
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87 xo = 0.0; |
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88 yo = (yn - 1.0)*ysize; |
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89 |
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90 eval (sprintf ("gset origin %g, %g", xo, yo)); |
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91 |
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92 __multiplot_mode__ = 1; |
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93 __multiplot_xsize__ = xsize; |
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94 __multiplot_ysize__ = ysize; |
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95 __multiplot_xn__ = xn; |
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96 __multiplot_yn__ = yn; |
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97 __multiplot_xi__ = 1; |
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98 __multiplot_yi__ = 1; |
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99 |
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100 gnuplot_command_replot = "cle;rep"; |
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101 |
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102 clearplot; |
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103 |
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104 endif |
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105 |
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106 endfunction |
