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1 # Copyright (C) 1993, 1994, 1995 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 the |
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7 # Free Software Foundation; either version 2, or (at your option) any |
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8 # later version. |
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9 # |
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10 # Octave is distributed in the hope that it will be useful, but WITHOUT |
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11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 # 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 02111-1307, USA. |
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18 |
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934
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19 function plot_int (caller, ...) |
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20 |
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21 if (nargin == 2) |
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22 |
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23 plot_int_1 (va_arg (), ""); |
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24 |
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25 elseif (nargin > 2) |
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26 |
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27 first_plot = 1; |
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28 hold_state = ishold; |
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4
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29 |
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934
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30 unwind_protect |
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31 |
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32 x = va_arg (); |
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33 nargin = nargin - 2; |
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34 x_set = 1; |
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35 y_set = 0; |
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36 |
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37 # Gather arguments, decode format, and plot lines. |
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38 |
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39 while (nargin-- > 0) |
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40 |
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41 fmt = ""; |
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42 new = va_arg (); |
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4
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43 |
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934
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44 if (isstr (new)) |
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45 if (! x_set) |
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46 error ("plot: no data to plot"); |
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47 endif |
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48 fmt = plot_opt (caller, new); |
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49 if (! y_set) |
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1518
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50 plot_int_1 (x, fmt); |
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934
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51 else |
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1518
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52 plot_int_2 (x, y, fmt); |
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934
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53 endif |
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1518
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54 hold on; |
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55 x_set = 0; |
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56 y_set = 0; |
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57 elseif (x_set) |
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58 if (y_set) |
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59 plot_int_2 (x, y, fmt); |
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1518
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60 hold on; |
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934
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61 x = new; |
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62 y_set = 0; |
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63 else |
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64 y = new; |
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65 y_set = 1; |
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66 endif |
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67 else |
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68 x = new; |
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69 x_set = 1; |
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70 endif |
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71 |
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72 endwhile |
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73 |
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74 # Handle last plot. |
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75 |
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76 if (x_set) |
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77 if (y_set) |
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78 plot_int_2 (x, y, fmt); |
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79 else |
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80 plot_int_1 (x, fmt); |
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81 endif |
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4
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82 endif |
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934
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83 |
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84 unwind_protect_cleanup |
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85 |
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86 if (! hold_state) |
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87 hold off; |
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88 endif |
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934
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89 |
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90 end_unwind_protect |
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91 |
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4
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92 else |
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934
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93 |
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94 msg = sprintf ("%s (x)\n", caller); |
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95 msg = sprintf ("%s %s (x, y)\n", msg, caller); |
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96 msg = sprintf ("%s %s (x2, y1, x2, y2)\n", msg, caller); |
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97 msg = sprintf ("%s %s (x, y, fmt)", msg, caller); |
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98 usage (msg); |
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99 |
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4
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100 endif |
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101 |
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102 endfunction |
