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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} {} grid (@var{arg}) |
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22 ## For two-dimensional plotting, force the display of a grid on the plot. |
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23 ## The argument may be either @code{"on"} or @code{"off"}. If it is |
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24 ## omitted, @code{"on"} is assumed. |
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25 ## @end deftypefn |
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26 ## |
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27 ## @seealso{plot, semilogx, semilogy, loglog, polar, mesh, contour, |
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28 ## bar, stairs, replot, xlabel, ylabel, and title} |
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29 |
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30 ## Author: jwe |
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31 |
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32 ## PKG_ADD: mark_as_command grid |
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33 |
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34 function grid (x) |
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35 |
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36 usage_msg = "grid (\"on\" | \"off\")"; |
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37 |
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38 do_replot = false; |
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39 |
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40 if (nargin == 0) |
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41 __gnuplot_raw__ ("set grid;\n"); |
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42 do_replot = true; |
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43 elseif (nargin == 1) |
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44 if (ischar (x)) |
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45 if (strcmp ("off", x)) |
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46 __gnuplot_raw__ ("set nogrid;\n"); |
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47 do_replot = true; |
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48 elseif (strcmp ("on", x)) |
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49 __gnuplot_raw__ ("set grid"); |
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50 do_replot = true; |
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51 else |
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52 usage (usage_msg); |
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53 endif |
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54 else |
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55 error ("grid: argument must be a string"); |
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56 endif |
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57 else |
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58 usage (usage_msg); |
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59 endif |
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60 |
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61 if (do_replot && automatic_replot) |
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62 replot (); |
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63 endif |
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64 |
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65 endfunction |
