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1 ### Copyright (C) 1996 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 ## usage: multiplot (xn, yn) |
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21 ## |
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22 ## Sets and resets multiplot mode |
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23 ## |
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24 ## If multiplot(0,0) then it will close multiplot mode and and if |
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25 ## arguments are non-zero, then it will set up multiplot mode with |
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26 ## xn,yn subplots along x and y axes. |
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27 ## |
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28 ## NOTE: this will work only with gnuplot installed with |
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29 ## multiplot patch |
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30 |
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31 function multiplot (xn, yn) |
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32 |
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33 ## Written by Vinayak Dutt, Dutt.Vinayak@mayo.EDU 3 Jul 95 |
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34 |
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35 if (! gnuplot_has_multiplot) |
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36 error ("multiplot: gnuplot does not appear to support this feature"); |
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37 endif |
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38 |
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39 ## global variables to keep track of multiplot options |
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40 |
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41 global multiplot_mode |
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42 global multiplot_xsize multiplot_ysize |
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43 global multiplot_xn multiplot_yn |
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44 global multiplot_xi multiplot_yi |
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45 |
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46 ## This is a real kludge. We gnuplot should be made so that replot can |
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47 ## be executed while doing multiple plots... |
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48 |
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49 global multiplot_save_auto_replot = automatic_replot |
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50 |
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51 if (nargin != 2) |
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52 usage ("multiplot (xn, yn)"); |
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53 endif |
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54 |
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55 if (! (is_scalar (xn) && is_scalar (yn))) |
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56 error ("multiplot: xn and yn have to be scalars"); |
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57 endif |
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58 |
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59 if ((isstr (automatic_replot) && strcmp (automatic_replot,"true")) |
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60 || automatic_replot) |
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61 warning ("turning off automatic replot for multiplot mode"); |
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62 multiplot_save_auto_replot = automatic_replot; |
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63 automatic_replot = 0; |
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64 endif |
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65 |
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66 xn = round (xn); |
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67 yn = round (yn); |
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68 |
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69 if (xn == 0 && yn == 0) |
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70 |
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71 set nomultiplot; |
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72 set size 1, 1; |
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73 set origin 0, 0; |
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74 |
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75 multiplot_mode = 0; |
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76 multiplot_xsize = 1; |
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77 multiplot_ysize = 1; |
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78 multiplot_xn = 1; |
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79 multiplot_yn = 1; |
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80 multiplot_xi = 1; |
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81 multiplot_yi = 1; |
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82 |
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83 ## Someone may have reset it betweeen calls... |
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84 |
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85 if (! isstr (automatic_replot) && ! automatic_replot) |
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86 automatic_replot = multiplot_save_auto_replot; |
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87 endif |
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88 |
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89 return; |
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90 |
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91 else |
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92 |
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93 if (xn < 1 || yn < 1) |
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94 error ("multiplot: xn and yn have to be positive integers"); |
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95 endif |
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96 |
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97 set multiplot; |
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98 |
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99 xsize = 1.0 ./ xn; |
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100 ysize = 1.0 ./ yn; |
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101 |
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102 eval (sprintf ("set size %g, %g", xsize, ysize)); |
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103 |
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104 xo = 0.0; |
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105 yo = (yn - 1.0)*ysize; |
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106 |
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107 eval (sprintf ("set origin %g, %g", xo, yo)); |
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108 |
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109 multiplot_mode = 1; |
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110 multiplot_xsize = xsize; |
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111 multiplot_ysize = ysize; |
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112 multiplot_xn = xn; |
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113 multiplot_yn = yn; |
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114 multiplot_xi = 1; |
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115 multiplot_yi = 1; |
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116 |
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117 endif |
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118 |
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119 endfunction |
