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annotate scripts/plot/grid.m @ 5708:dec8dd15a574

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[project @ 2006-03-22 22:25:58 by jwe]
author jwe
date Wed, 22 Mar 2006 22:26:44 +0000
parents 2618a0750ae6
children f0fbefd984f6
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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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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 ## @seealso{plot, semilogx, semilogy, loglog, polar, mesh, contour,
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26 ## bar, stairs, replot, xlabel, ylabel, title}
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27 ## @end deftypefn
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29 ## Author: jwe
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31 ## PKG_ADD: mark_as_command grid
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33 function grid (x)
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35 usage_msg = "grid (\"on\" | \"off\")";
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37 do_replot = false;
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39 if (nargin == 0)
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40 __gnuplot_raw__ ("set grid;\n");
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41 do_replot = true;
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42 elseif (nargin == 1)
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43 if (ischar (x))
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44 if (strcmp ("off", x))
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45 __gnuplot_raw__ ("set nogrid;\n");
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46 do_replot = true;
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47 elseif (strcmp ("on", x))
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48 __gnuplot_raw__ ("set grid;\n");
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49 do_replot = true;
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50 else
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51 usage (usage_msg);
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52 endif
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53 else
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54 error ("grid: argument must be a string");
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55 endif
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56 else
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57 usage (usage_msg);
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58 endif
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60 if (do_replot && automatic_replot)
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61 replot ();
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62 endif
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63
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64 endfunction