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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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245
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19 |
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934
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20 function plot_int (caller, ...) |
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21 |
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22 if (nargin == 2) |
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23 |
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24 plot_int_1 (va_arg (), ""); |
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25 |
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26 elseif (nargin > 2) |
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27 |
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28 first_plot = 1; |
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29 hold_state = ishold; |
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4
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30 |
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934
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31 unwind_protect |
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32 |
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33 x = va_arg (); |
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34 nargin = nargin - 2; |
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35 x_set = 1; |
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36 y_set = 0; |
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37 |
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2303
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38 ## Gather arguments, decode format, and plot lines. |
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39 |
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40 while (nargin-- > 0) |
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41 |
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42 fmt = ""; |
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43 new = va_arg (); |
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4
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44 |
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934
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45 if (isstr (new)) |
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46 if (! x_set) |
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47 error ("plot: no data to plot"); |
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48 endif |
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49 fmt = plot_opt (caller, new); |
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50 if (! y_set) |
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1518
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51 plot_int_1 (x, fmt); |
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934
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52 else |
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1518
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53 plot_int_2 (x, y, fmt); |
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934
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54 endif |
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1518
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55 hold on; |
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934
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56 x_set = 0; |
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57 y_set = 0; |
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58 elseif (x_set) |
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59 if (y_set) |
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60 plot_int_2 (x, y, fmt); |
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1518
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61 hold on; |
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62 x = new; |
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63 y_set = 0; |
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64 else |
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65 y = new; |
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66 y_set = 1; |
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67 endif |
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68 else |
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69 x = new; |
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70 x_set = 1; |
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71 endif |
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72 |
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73 endwhile |
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74 |
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75 ## Handle last plot. |
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76 |
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77 if (x_set) |
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78 if (y_set) |
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79 plot_int_2 (x, y, fmt); |
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80 else |
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81 plot_int_1 (x, fmt); |
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82 endif |
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83 endif |
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934
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84 |
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85 unwind_protect_cleanup |
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86 |
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87 if (! hold_state) |
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88 hold off; |
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89 endif |
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934
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90 |
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91 end_unwind_protect |
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92 |
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93 else |
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934
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94 |
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95 msg = sprintf ("%s (x)\n", caller); |
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96 msg = sprintf ("%s %s (x, y)\n", msg, caller); |
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97 msg = sprintf ("%s %s (x2, y1, x2, y2)\n", msg, caller); |
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98 msg = sprintf ("%s %s (x, y, fmt)", msg, caller); |
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99 usage (msg); |
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100 |
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4
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101 endif |
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102 |
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103 endfunction |
