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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} __plr2__ (@var{theta}, @var{rho}, @var{fmt}) |
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22 ## @end deftypefn |
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23 |
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24 ## Author: jwe |
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25 |
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26 function __plr2__ (theta, rho, fmt) |
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27 |
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28 if (nargin != 3) |
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29 usage ("__plr2__ (theta, rho, fmt)"); |
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30 endif |
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31 |
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32 if (any (imag (theta))) |
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33 theta = real (theta); |
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34 endif |
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35 |
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36 if (any (imag (rho))) |
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37 rho = real (rho); |
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38 endif |
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39 |
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40 if (isscalar (theta)) |
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41 if (isscalar (rho)) |
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42 x = rho * cos (theta); |
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43 y = rho * sin (theta); |
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44 __plt__ ("polar", x, y, fmt); |
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45 else |
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46 error ("__plr2__: invalid data for plotting"); |
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47 endif |
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48 elseif (isvector (theta)) |
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49 if (isvector (rho)) |
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50 if (length (theta) != length (rho)) |
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51 error ("__plr2__: vector lengths must match"); |
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52 endif |
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53 if (rows (rho) == 1) |
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54 rho = rho'; |
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55 endif |
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56 if (rows (theta) == 1) |
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57 theta = theta'; |
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58 endif |
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59 x = rho .* cos (theta); |
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60 y = rho .* sin (theta); |
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61 __plt__ ("polar", x, y, fmt); |
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62 elseif (ismatrix (rho)) |
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63 [t_nr, t_nc] = size (theta); |
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64 if (t_nr == 1) |
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65 theta = theta'; |
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66 tmp = t_nr; |
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67 t_nr = t_nc; |
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68 t_nc = tmp; |
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69 endif |
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70 [r_nr, r_nc] = size (rho); |
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71 if (t_nr != r_nr) |
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72 rho = rho'; |
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73 tmp = r_nr; |
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74 r_nr = r_nc; |
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75 r_nc = tmp; |
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76 endif |
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77 if (t_nr != r_nr) |
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78 error ("__plr2__: vector and matrix sizes must match"); |
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79 endif |
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80 x = diag (cos (theta)) * rho; |
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81 y = diag (sin (theta)) * rho; |
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82 __plt__ ("polar", x, y, fmt); |
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83 else |
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84 error ("__plr2__: invalid data for plotting") |
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85 endif |
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86 elseif (ismatrix (theta)) |
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87 if (isvector (rho)) |
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88 [r_nr, r_nc] = size (rho); |
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89 if (r_nr == 1) |
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90 rho = rho'; |
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91 tmp = r_nr; |
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92 r_nr = r_nc; |
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93 r_nc = tmp; |
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94 endif |
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95 [t_nr, t_nc] = size (theta); |
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96 if (r_nr != t_nr) |
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97 theta = theta'; |
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98 tmp = t_nr; |
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99 t_nr = t_nc; |
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100 t_nc = tmp; |
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101 endif |
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102 if (r_nr != t_nr) |
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103 error ("__plr2__: vector and matrix sizes must match"); |
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104 endif |
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105 diag_r = diag (rho); |
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106 x = diag_r * cos (theta); |
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107 y = diag_r * sin (theta); |
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108 __plt__ ("polar", x, y, fmt); |
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109 elseif (ismatrix (rho)) |
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110 if (size (rho) != size (theta)) |
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111 error ("__plr2__: matrix dimensions must match"); |
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112 endif |
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113 x = rho .* cos (theta); |
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114 y = rho .* sin (theta); |
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115 __plt__ ("polar", x, y, fmt); |
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116 else |
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117 error ("__plr2__: invalid data for plotting") |
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118 endif |
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119 else |
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120 error ("__plr2__: invalid data for plotting") |
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121 endif |
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122 |
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123 endfunction |
