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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} {} __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 __plt2ss__ (x, y, fmt); |
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45 endif |
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46 elseif (isvector (theta)) |
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47 if (isvector (rho)) |
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48 if (length (theta) != length (rho)) |
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49 error ("polar: vector lengths must match"); |
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50 endif |
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51 if (rows (rho) == 1) |
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52 rho = rho'; |
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53 endif |
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54 if (rows (theta) == 1) |
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55 theta = theta'; |
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56 endif |
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57 x = rho .* cos (theta); |
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58 y = rho .* sin (theta); |
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59 __plt2vv__ (x, y, fmt); |
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60 elseif (ismatrix (rho)) |
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61 [t_nr, t_nc] = size (theta); |
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62 if (t_nr == 1) |
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63 theta = theta'; |
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64 tmp = t_nr; |
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65 t_nr = t_nc; |
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66 t_nc = tmp; |
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67 endif |
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68 [r_nr, r_nc] = size (rho); |
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69 if (t_nr != r_nr) |
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70 rho = rho'; |
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71 tmp = r_nr; |
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72 r_nr = r_nc; |
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73 r_nc = tmp; |
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74 endif |
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75 if (t_nr != r_nr) |
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76 error ("polar: vector and matrix sizes must match"); |
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77 endif |
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78 x = diag (cos (theta)) * rho; |
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79 y = diag (sin (theta)) * rho; |
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80 __plt2vm__ (x, y, fmt); |
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81 endif |
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82 elseif (ismatrix (theta)) |
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83 if (isvector (rho)) |
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84 [r_nr, r_nc] = size (rho); |
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85 if (r_nr == 1) |
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86 rho = rho'; |
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87 tmp = r_nr; |
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88 r_nr = r_nc; |
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89 r_nc = tmp; |
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90 endif |
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91 [t_nr, t_nc] = size (theta); |
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92 if (r_nr != t_nr) |
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93 theta = theta'; |
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94 tmp = t_nr; |
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95 t_nr = t_nc; |
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96 t_nc = tmp; |
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97 endif |
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98 if (r_nr != t_nr) |
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99 error ("polar: vector and matrix sizes must match"); |
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100 endif |
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101 diag_r = diag (rho); |
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102 x = diag_r * cos (theta); |
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103 y = diag_r * sin (theta); |
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104 __plt2mv__ (x, y, fmt); |
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105 elseif (ismatrix (rho)) |
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106 if (size (rho) != size (theta)) |
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107 error ("polar: matrix dimensions must match"); |
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108 endif |
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109 x = rho .* cos (theta); |
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110 y = rho .* sin (theta); |
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111 __plt2mm__ (x, y, fmt); |
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112 endif |
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113 endif |
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114 |
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115 endfunction |
