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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} {} polar (@var{theta}, @var{rho}, @var{fmt}) |
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22 ## Make a two-dimensional plot given polar the coordinates @var{theta} and |
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23 ## @var{rho}. |
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24 ## |
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25 ## The optional third argument specifies the line type. |
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26 ## @end deftypefn |
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27 ## |
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28 ## @seealso{plot, semilogx, semilogy, loglog, mesh, contour, bar, |
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29 ## stairs, replot, xlabel, ylabel, and title} |
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30 |
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31 ## Author: jwe |
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32 |
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33 function polar (x1, x2, fmt) |
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34 |
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35 ## XXX FIXME XXX -- these plot states should really just be set |
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36 ## temporarily, probably inside an unwind_protect block, but there is |
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37 ## no way to determine their current values. |
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38 |
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39 __gnuplot_raw__ ("set nologscale;\n"); |
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40 __gnuplot_raw__ ("set nopolar;\n"); |
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41 |
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42 if (nargin == 3) |
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43 if (isstr (fmt)) |
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44 fmt = __pltopt__ ("polar", fmt); |
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45 else |
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46 error ("polar: third argument must be a string"); |
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47 endif |
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48 __plr2__ (x1, x2, fmt); |
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49 elseif (nargin == 2) |
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50 if (isstr (x2)) |
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51 fmt = __pltopt__ ("polar", x2); |
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52 __plr1__ (x1, fmt); |
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53 else |
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54 fmt = ""; |
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55 __plr2__ (x1, x2, fmt); |
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56 endif |
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57 elseif (nargin == 1) |
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58 fmt = ""; |
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59 __plr1__ (x1, fmt); |
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60 else |
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61 usage ("polar (theta, rho, fmt)"); |
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62 endif |
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63 |
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64 endfunction |
