条形图x轴Matlab [英] Bar plot x-axis Matlab

问题描述

我陷入Matlab中的条形图问题.直到这里，我都得到了Matlab帮助和这个论坛的支持，但是在x轴上，仍然只有2个名字.我想在栏下显示名称"，并在其中显示两个名称的类别".谢谢！

I am stuck with a bar plot in Matlab. I got it to work with Matlab help and this this forum until here, but on the x-axis, there are still only 2 names. I would like to have the "names" under the bars and the "categories" where the 2 names show up now. Thank you!

values = [4 10...
    11 2 3;...
    4 1...
    5 2 -10];
names = {'PreSplitTotalEON' 'PostSplitTotalEON'...
    'PreSplitPureEON' 'PostSplitPureEON' 'PostSplitUniper';...
    'PreSplitTotalRWE' 'PostSplitTotalRWE'...
    'PreSplitPureRWE' 'PostSplitPureRWE' 'PostSplitInnogy'};
categories = {'EON', 'RWE'};
b = bar(values,'FaceColor','flat');
xticklabels([names(1,:)';names(2,:)'])         
% This will set labels to be used for each tick of the x-axis
xticks(1:1:length([names(1,:)';names(2,:)']))
% This will set how many ticks you want on the x-axis. Here, there
% should be 48 ticks being generated. One for each piece of data you have.
xtickangle(90)
% This will rotate the label so that the labels will not overlap
% with one another. This is in degrees.
for k = 1:size(values,2) % for fancier colors.
    b(k).CData = k;
end

推荐答案

默认方法是使用legend显示组中每个元素的名称.但是可以通过XOffset和XData属性访问每个条的位置.请参阅此答案在matlab中.

The default way would be to use legend to display the name of each element in the group. But the position of each bar can be accessed through the XOffset and XData properties. See this answer in matlab central.

因此您可以使用类似的内容:

So you can use something like:

ticksList = b(1).XData+arrayfun(@(x)x.XOffset, b)';
xticks(ticksList(:))
xticklabels([names(1,:)';names(2,:)'])

以正确显示每个栏下方的名称.但是，我看不到要如何在每个条形图的下方显示每个条形图的名称和类别而不重叠.您可以通过创建新轴将类别显示在顶部.添加类似的东西:

to correctly display the names below each bar. However, I don't see how you want to display the names of each bar and the categories together below the bars without overlapping. You could instead display the categories on top by creating a new axes. Adding Something like:

ax1 = gca;
ax2 = axes('Position', get(ax1, 'Position'),'Color', 'none');
set(ax2, 'XAxisLocation', 'top','YAxisLocation','Right');
set(ax2, 'XLim', get(ax1, 'XLim'),'YLim', get(ax1, 'YLim'));
xticks(b(1).XData)
xticklabels(categories)

即完整的代码现在应该是:

I.e. the complete code would be now:

clear all
close all

values = [4 1 11 2 3; 4 1 5 2 -10];
names = {'Pre split total EON' 'Post split total EON'...
    'Pre split pure EON' 'Post split pure EON' 'Post split Uniper';...
    'Pre split total RWE' 'Post split total RWE'...
    'Pre split pure RWE' 'Post split pure RWE' 'PostSplitInnogy'};
categories = {'EON','RWE'};
figure;
b = bar(values,'FaceColor','flat');
ticksList = b(1).XData+arrayfun(@(x)x.XOffset, b)';
xticks(ticksList(:))
xticklabels([names(1,:)';names(2,:)'])
xtickangle(90)
ax1 = gca;
ax2 = axes('Position', get(ax1, 'Position'),'Color', 'none');
set(ax2, 'XAxisLocation', 'top','YAxisLocation','Right');
set(ax2, 'XLim', get(ax1, 'XLim'),'YLim', get(ax1, 'YLim'));
set(ax2, 'YTick', []);
xticks(b(1).XData)
xticklabels(categories)
for k = 1:size(values,2) % for fancier colors.
    b(k).CData = k;
end

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