Mercurial > octave
view scripts/plot/draw/bar.m @ 29071:d2f7fb06bce3
Fixed stacked bar chart handling of negative values (bug #58216)
* NEWS: Added note about bar and barh matching Matlab output to Matlab
compatibility section.
* __bar__.m: Updated input parsing to separately handle negative stacked
values.
* bar.m, barh.m: Added demo and input error handling BISTS.
* * *
(bug #58216)
author | Nicholas R. Jankowski <jankowskin@asme.org> |
---|---|
date | Tue, 17 Nov 2020 15:52:03 -0500 |
parents | 9342688e86b4 |
children | 8bb14f4979ca |
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######################################################################## ## ## Copyright (C) 1993-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## 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 ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {} bar (@var{y}) ## @deftypefnx {} {} bar (@var{x}, @var{y}) ## @deftypefnx {} {} bar (@dots{}, @var{w}) ## @deftypefnx {} {} bar (@dots{}, @var{style}) ## @deftypefnx {} {} bar (@dots{}, @var{prop}, @var{val}, @dots{}) ## @deftypefnx {} {} bar (@var{hax}, @dots{}) ## @deftypefnx {} {@var{h} =} bar (@dots{}, @var{prop}, @var{val}, @dots{}) ## Produce a bar graph from two vectors of X-Y data. ## ## If only one argument is given, @var{y}, it is taken as a vector of Y values ## and the X coordinates are the range @code{1:numel (@var{y})}. ## ## The optional input @var{w} controls the width of the bars. A value of ## 1.0 will cause each bar to exactly touch any adjacent bars. ## The default width is 0.8. ## ## If @var{y} is a matrix, then each column of @var{y} is taken to be a ## separate bar graph plotted on the same graph. By default the columns ## are plotted side-by-side. This behavior can be changed by the @var{style} ## argument which can take the following values: ## ## @table @asis ## @item @qcode{"grouped"} (default) ## Side-by-side bars with a gap between bars and centered over the ## X-coordinate. ## ## @item @qcode{"stacked"} ## Bars are stacked so that each X value has a single bar composed of ## multiple segments. ## ## @item @qcode{"hist"} ## Side-by-side bars with no gap between bars and centered over the ## X-coordinate. ## ## @item @qcode{"histc"} ## Side-by-side bars with no gap between bars and left-aligned to the ## X-coordinate. ## @end table ## ## Optional property/value pairs are passed directly to the underlying patch ## objects. The full list of properties is documented at ## @ref{Patch Properties}. ## ## If the first argument @var{hax} is an axes handle, then plot into this axes, ## rather than the current axes returned by @code{gca}. ## ## The optional return value @var{h} is a vector of handles to the created ## "bar series" hggroups with one handle per column of the variable @var{y}. ## This series makes it possible to change a common element in one bar series ## object and have the change reflected in the other "bar series". ## For example, ## ## @example ## @group ## h = bar (rand (5, 10)); ## set (h(1), "basevalue", 0.5); ## @end group ## @end example ## ## @noindent ## changes the position on the base of all of the bar series. ## ## The following example modifies the face and edge colors using ## property/value pairs. ## ## @example ## bar (randn (1, 100), "facecolor", "r", "edgecolor", "b"); ## @end example ## ## @noindent ## The color of the bars is taken from the figure's colormap, such that ## ## @example ## @group ## bar (rand (10, 3)); ## colormap (summer (64)); ## @end group ## @end example ## ## @noindent ## will change the colors used for the bars. The color of bars can also be set ## manually using the @qcode{"facecolor"} property as shown below. ## ## @example ## @group ## h = bar (rand (10, 3)); ## set (h(1), "facecolor", "r") ## set (h(2), "facecolor", "g") ## set (h(3), "facecolor", "b") ## @end group ## @end example ## ## @seealso{barh, hist, pie, plot, patch} ## @end deftypefn function varargout = bar (varargin) varargout = cell (nargout, 1); [varargout{:}] = __bar__ (true, "bar", varargin{:}); endfunction %!demo %! clf; %! y = rand (11, 1); %! h = bar (y); %! set (h, "ydata", sort (rand (11, 1))); %! title ("bar() graph"); %!demo %! clf; %! h = bar (rand (5, 3)); %! set (h(1), "facecolor", "r"); %! set (h(2), "facecolor", "g"); %! set (h(3), "facecolor", "b"); %! title ("bar() graph w/multiple bars"); %!demo %! clf; %! h = bar (rand (5, 3), "stacked"); %! title ("bar() graph with stacked style"); %!demo %! clf; %! y = -rand (3) .* eye (3) + rand (3) .* (! eye (3)); %! h = bar (y, "stacked"); %! title ("stacked bar() graph including intermingled negative values"); %% Test input validation %!error bar () %!error <Y must be numeric> bar ("foo") %!error <X must be a vector> bar ([1 2; 3 4], [1 2 3 4]) %!error <X vector values must be unique> bar ([1 2 3 3], [1 2 3 4]) %!error <length of X and Y must be equal> bar ([1 2 3], [1 2 3 4]) %!error <length of X and Y must be equal> bar ([1 2 3 4], [1 2 3])