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view scripts/plot/subplot.m @ 17338:1c89599167a6
maint: End m-files with 1 blank line.
Simplifies automated grammarchecking script.
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scripts/ui/private/message_dialog.m: End m-files with 1 blank line.
author | Rik <rik@octave.org> |
---|---|
date | Wed, 28 Aug 2013 08:33:02 -0700 |
parents | 088d014a7fe2 |
children | 9304514b566c |
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## Copyright (C) 1995-2012 John W. Eaton ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {} subplot (@var{rows}, @var{cols}, @var{index}) ## @deftypefnx {Function File} {} subplot (@var{rcn}) ## @deftypefnx {Function File} {} subplot (@dots{}, "align") ## @deftypefnx {Function File} {@var{hax} =} subplot (@dots{}) ## @deftypefnx {Function File} {@var{hax} =} subplot (@dots{}) ## Set up a plot grid with @var{rows} by @var{cols} subwindows and set the ## current axes for plotting to the location given by @var{index}. ## ## If only one numeric argument is supplied, then it must be a three digit ## value specifying the location in digits 1 (rows) and 2 (columns) and the ## plot index in digit 3. ## ## The plot index runs row-wise. First all the columns in a row are numbered ## and then the next row is filled. ## ## For example, a plot with 2 by 3 grid will have plot indices running as ## follows: ## @tex ## \vskip 10pt ## \hfil\vbox{\offinterlineskip\hrule ## \halign{\vrule#&&\qquad\hfil#\hfil\qquad\vrule\cr ## height13pt&1&2&3\cr height12pt&&&\cr\noalign{\hrule} ## height13pt&4&5&6\cr height12pt&&&\cr\noalign{\hrule}}} ## \hfil ## \vskip 10pt ## @end tex ## @ifnottex ## ## @example ## @group ## +-----+-----+-----+ ## | 1 | 2 | 3 | ## +-----+-----+-----+ ## | 4 | 5 | 6 | ## +-----+-----+-----+ ## @end group ## @end example ## ## @end ifnottex ## ## @var{index} may also be a vector. In this case, the new axis will enclose ## the grid locations specified. The first demo illustrates an example: ## ## @example ## demo ("subplot", 1) ## @end example ## ## If the option @qcode{"align"} is given then the plot boxes of the subwindows ## will align, but this may leave no room for axis tick marks or labels. ## ## If the output @var{hax} is requested, subplot returns the axis handle for ## the subplot. This is useful for modifying the properties of a subplot. ## @seealso{axes, plot} ## @end deftypefn ## Author: Vinayak Dutt <Dutt.Vinayak@mayo.EDU> ## Adapted-By: jwe function h = subplot (varargin) align_axes = false; replace_axes = false; have_position = false; initial_args_decoded = false; if (nargin > 2) ## R, C, N? arg1 = varargin{1}; arg2 = varargin{2}; arg3 = varargin{3}; if (isnumeric (arg1) && isscalar (arg1) && isnumeric (arg2) && isscalar (arg2) && isnumeric (arg3)) rows = arg1; cols = arg2; index = arg3; varargin(1:3)= []; initial_args_decoded = true; endif endif if (! initial_args_decoded && nargin > 1) ## check for 'position', pos, ... if (strcmpi (varargin{1}, "position")) arg = varargin{2}; if (isnumeric (arg) && numel (arg) == 4) pos = arg; varargin(1:2) = []; have_position = true; initial_args_decoded = true; else error ("expecting position to be a 4-element numeric array"); endif endif endif if (! initial_args_decoded && nargin > 0) arg = varargin{1}; if (nargin == 1 && isaxes (arg)) ## Axes handle axes (arg); cf = get (0, "currentfigure"); set (cf, "nextplot", "add"); return; elseif (isscalar (arg) && arg >= 0) ## RCN? index = rem (arg, 10); arg = (arg - index) / 10; cols = rem (arg, 10); arg = (arg - cols) / 10; rows = rem (arg, 10); varargin(1) = []; initial_args_decoded = true; else error ("subplot: expecting axes handle or RCN argument"); endif endif if (! initial_args_decoded) print_usage (); endif if (! have_position) cols = round (cols); rows = round (rows); index = round (index); if (any (index < 1) || any (index > rows*cols)) error ("subplot: INDEX value must be greater than 1 and less than ROWS*COLS"); endif if (cols < 1 || rows < 1 || index < 1) error ("subplot: COLS, ROWS, and INDEX must be be positive"); endif endif nargs = numel (varargin); while (nargs > 0) arg = varargin{1}; if (strcmpi (arg, "align")) align_axes = true; elseif (strcmpi (arg, "replace")) replace_axes = true; else break; endif varargin(1) = []; nargs--; endwhile axesunits = get (0, "defaultaxesunits"); cf = gcf (); figureunits = get (cf, "units"); unwind_protect units = "normalized"; set (0, "defaultaxesunits", units); set (cf, "units", "pixels"); ## FIXME: At the moment we force gnuplot to use the aligned mode ## which will set "activepositionproperty" to "position". ## Τhis can yield to text overlap between labels and titles ## see bug #31610 if (strcmp (get (cf, "__graphics_toolkit__"), "gnuplot")) align_axes = true; endif if (! have_position) pos = subplot_position (rows, cols, index, "position"); outerpos = subplot_position (rows, cols, index, "outerposition"); box = [pos(1:2), pos(1:2)+pos(3:4)]; outerbox = [outerpos(1:2), outerpos(1:2)+outerpos(3:4)]; looseinset = [box(1:2)-outerbox(1:2), outerbox(3:4)-box(3:4)]; if (align_axes) activepositionproperty = "position"; else activepositionproperty = "outerposition"; endif endif set (cf, "nextplot", "add"); found = false; kids = get (cf, "children"); for child = reshape (kids, 1, numel (kids)) ## Check whether this child is still valid; this might not be the ## case anymore due to the deletion of previous children (due to ## "deletefcn" callback or for legends/colorbars that are deleted ## with their corresponding axes). if (! ishandle (child)) continue; endif if (strcmp (get (child, "type"), "axes")) ## Skip legend and colorbar objects. if (strcmp (get (child, "tag"), "legend") || strcmp (get (child, "tag"), "colorbar")) continue; endif if (align_axes) objpos = get (child, "position"); else objpos = get (child, "outerposition"); endif if (all (abs (objpos - pos) < eps) && ! replace_axes) ## If the new axes are in exactly the same position as an ## existing axes object, use the existing axes. found = true; hsubplot = child; else ## If the new axes overlap an old axes object, delete the old ## axes. x0 = pos(1); x1 = x0 + pos(3); y0 = pos(2); y1 = y0 + pos(4); objx0 = objpos(1); objx1 = objx0 + objpos(3); objy0 = objpos(2); objy1 = objy0 + objpos(4); if (! (x0 >= objx1 || x1 <= objx0 || y0 >= objy1 || y1 <= objy0)) delete (child); endif endif endif endfor if (found) set (cf, "currentaxes", hsubplot); else hsubplot = axes ("box", "off", "position", pos, "looseinset", looseinset, "activepositionproperty", activepositionproperty, varargin{:}); addproperty ("subplot_align", hsubplot, "boolean", true); addlistener (hsubplot, "position", @subplot_align); if (! align_axes) set (hsubplot, "subplot_align", false) subplot_align (hsubplot) endif endif unwind_protect_cleanup set (0, "defaultaxesunits", axesunits); set (cf, "units", figureunits); end_unwind_protect if (nargout > 0) h = hsubplot; endif endfunction function pos = subplot_position (rows, cols, index, position_property) if (rows == 1 && cols == 1) ## Trivial result for subplot (1,1,1) if (strcmpi (position_property, "position")) pos = get (0, "defaultaxesposition"); else pos = get (0, "defaultaxesouterposition"); endif return; endif if (strcmp (position_property, "outerposition") || strcmp (position_property, "outerpositiontight")) margins.left = 0.05; margins.bottom = 0.05; margins.right = 0.05; margins.top = 0.05; if (strcmp (position_property, "outerpositiontight")) margins.column = 0.; margins.row = 0.; else margins.column = 0.04 / cols; margins.row = 0.04 / rows; endif width = 1 - margins.left - margins.right - (cols-1)*margins.column; width = width / cols; height = 1 - margins.top - margins.bottom - (rows-1)*margins.row; height = height / rows; else defaultaxesposition = get (0, "defaultaxesposition"); ## The outer margins surrounding all subplot "positions" are independent ## of the number of rows and/or columns margins.left = defaultaxesposition(1); margins.bottom = defaultaxesposition(2); margins.right = 1.0 - margins.left - defaultaxesposition(3); margins.top = 1.0 - margins.bottom - defaultaxesposition(4); ## Fit from Matlab experiments pc = 1 ./ [0.1860, (margins.left + margins.right - 1)]; margins.column = 1 ./ polyval (pc , cols); pr = 1 ./ [0.2282, (margins.top + margins.bottom - 1)]; margins.row = 1 ./ polyval (pr , rows); ## Calculate the width/height of the subplot axes "position". ## This is also consistent with Matlab width = 1 - margins.left - margins.right - (cols-1)*margins.column; width = width / cols; height = 1 - margins.top - margins.bottom - (rows-1)*margins.row; height = height / rows; endif ## Index offsets from the lower left subplot yi = fix ((index(:)-1)/cols); xi = index(:) - yi*cols - 1; yi = (rows - 1) - yi; ## Lower left corner of the subplot, i.e. position(1:2) x0 = xi .* (width + margins.column) + margins.left; y0 = yi .* (height + margins.row) + margins.bottom; if (numel (x0) > 1) ## subplot (row, col, m:n) x1 = max (x0(:)) + width; y1 = max (y0(:)) + height; x0 = min (x0(:)); y0 = min (y0(:)); pos = [x0, y0, x1-x0, y1-y0]; else ## subplot (row, col, num) pos = [x0, y0, width, height]; endif endfunction function subplot_align (h, varargin) persistent updating = false if (! updating) unwind_protect updating = true; hfig = ancestor (h, "figure"); hsubplots = findall (hfig, 'type', 'axes', 'subplot_align', 'off'); if (! isempty (hsubplots)) tightinset = get (hsubplots, 'tightinset'); if (iscell (tightinset)) tightinset = max (cell2mat (tightinset)); endif looseinset = get (hsubplots, 'looseinset'); if (iscell (looseinset)) looseinset = max (cell2mat (looseinset)); endif looseinset = max (tightinset, looseinset); set (hsubplots, 'looseinset', looseinset); endif unwind_protect_cleanup updating = false; end_unwind_protect endif endfunction %!demo %! clf; %! r = 3; %! c = 3; %! fmt = {'horizontalalignment', 'center', 'verticalalignment', 'middle'}; %! for n = 1 : r*c %! subplot (r, c, n); %! xlabel (sprintf ('xlabel #%d', n)); %! ylabel (sprintf ('ylabel #%d', n)); %! title (sprintf ('title #%d', n)); %! text (0.5, 0.5, sprintf ('subplot(%d,%d,%d)', r, c, n), fmt{:}); %! axis ([0 1 0 1]); %! end %! subplot (r, c, 1:3); %! xlabel (sprintf ('xlabel #%d:%d', 1, 3)); %! ylabel (sprintf ('ylabel #%d:%d', 1, 3)); %! title (sprintf ('title #%d:%d', 1, 3)); %! text (0.5, 0.5, sprintf ('subplot(%d,%d,%d:%d)', r, c, 1, 3), fmt{:}); %! axis ([0 1 0 1]); %!demo %! clf; %! x = 0:1; %! for n = 1:4 %! subplot (2,2,n, 'align'); %! plot (x, x); %! xlabel (sprintf ('xlabel (2,2,%d)', n)); %! ylabel (sprintf ('ylabel (2,2,%d)', n)); %! title (sprintf ('title (2,2,%d)', n)); %! end %! subplot (1,2,1, 'align'); %! plot (x, x); %! xlabel ('xlabel (1,2,1)'); %! ylabel ('ylabel (1,2,1)'); %! title ('title (1,2,1)'); %!demo %! clf; %! x = 0:10; %! ax(1) = subplot (221); %! set (ax(1), 'tag', '1'); %! plot (x, rand (3, 11)) %! title ('x & y labels & ticklabels'); %! xlabel xlabel %! ylabel ylabel %! ax(2) = subplot (222); %! set (ax(2), 'tag', '2'); %! plot (x, rand (3, 11)) %! title ('no labels'); %! axis ('nolabel','tic') %! ax(3) = subplot (223); %! set (ax(3), 'tag', '3'); %! plot (x, rand (3, 11)) %! title ('no labels'); %! axis ('nolabel','tic') %! ax(4) = subplot (224); %! set (ax(4), 'tag', '4'); %! plot (x, rand (3, 11)) %! title ('x & y labels & ticklabels'); %! xlabel xlabel %! ylabel ylabel %!demo %! x = 0:10; %! subplot (221); %! plot (x, rand (3, 11)) %! ylim ([0, 1]); %! text (0.5, 0.5, '{x,y}labels & {x,y}ticklabels', ... %! 'horizontalalignment', 'center', ... %! 'units', 'normalized'); %! xlabel xlabel %! ylabel ylabel %! title title %! subplot (222); %! plot (x, rand (3, 11)) %! axis ('labely'); %! ylabel ylabel %! text (0.5, 0.5, 'no xlabels, xticklabels', ... %! 'horizontalalignment', 'center', ... %! 'units', 'normalized'); %! subplot (223); %! plot (x, rand (3, 11)) %! axis ('labelx'); %! text (0.5, 0.5, 'no ylabels, yticklabels', ... %! 'horizontalalignment', 'center', ... %! 'units', 'normalized'); %! xlabel xlabel %! title title %! subplot (224); %! plot (x, rand (3, 11)) %! axis ('nolabel','tic'); %! text (0.5, 0.5, 'no {x,y}labels, {x,y}ticklabels', ... %! 'horizontalalignment', 'center', ... %! 'units', 'normalized');