Matlab＆＃39; FaceColor＆＃39;忽略输入并选择任意颜色

Question

fig = figure('Color','w');
bar(MomVsMarket.Date, [MomVsMarket.MomHold4Weeks ...
    MomVsMarket.MomHold12Weeks  MomVsMarket.MomHold24Weeks],'grouped');
ylabel('Profitability in %');
xlabel('Time');
title('Profitability over Time');
ax = get(gca);
%set the first bar chart style
set(bar,'FaceColor', 'b' ,'BarWidth',2);
%set the second bar chart style
set(bar,'FaceColor','r','BarWidth',2);
%set the third bar chart style
set(bar,'FaceColor','y','BarWidth',2);

生成我的条形图叠加，没有指定的颜色＆＃39; b＆＃39;，＆＃39; r＆＃39;和＆＃39; 。错误在哪里？

Answer 1

您应该使用bar的返回值来获取单独条形图的句柄：

function q41648723
%% Generate some data:
d1 = datetime(2006,1,1,0,0,0);
d2 = datetime(2016,7,1,0,0,0);
date = d1:caldays(10):d2;
data = 5*randn(numel(date),3);

MomVsMarket = struct('Date',date,...
                     'MomHold4Weeks', data(:,1),...
                     'MomHold12Weeks',data(:,2),...
                     'MomHold24Weeks',data(:,3));
clear d1 d2 date data;
%% Plot:
figure('Color','w');
hB = bar(MomVsMarket.Date, [MomVsMarket.MomHold4Weeks,...
                            MomVsMarket.MomHold12Weeks,...
                            MomVsMarket.MomHold24Weeks],'grouped');
ylabel('Profitability in %');
xlabel('Time');
title('Profitability over Time');
%set the first bar chart style
set(hB(1),'FaceColor', 'b' ,'BarWidth',2);
%set the second bar chart style
set(hB(2),'FaceColor','r','BarWidth',2);
%set the third bar chart style
set(hB(3),'FaceColor','y','BarWidth',2);

请注意我在上面的代码中如何使用hB。以上结果（MATLAB R2016b）：

P.S。

下次，请在您的问题中提供可运行的代码示例（请参阅：Minimal, Complete, and Verifiable example）。如果我不必自己提供一些测试数据，我本可以早点给你一个答案。