matlab - 传奇;键/颜色之前的文本/描述？

Question

默认情况下，MATLAB 将图例条目的文本部分放在图中所用内容的样本之后。有什么办法可以扭转这种局面吗？例如，使用下面的代码，图例中的第一个条目是一个深蓝色矩形，后跟文本 I'm；我希望它是相反的(即文本 I'm 后跟一个深蓝色矩形)。我正在使用 R2017b

示例代码:

test_values = [ 12, 232, 22, 44, 67, 72, 123, 35, 98 ];
test_text   = [ "I'm", "sorry", "Dave", "I'm", "afraid", "I", "can't", "do", "that" ];

Pie = pie( test_values );

legend( test_text );

Answer 1

这是使用一些 undocumented features 的另一个选项:

test_values = [ 12, 232, 22, 44, 67, 72, 123, 35, 98 ];
test_text   = {'I''m'; 'sorry'; 'Dave'; 'I''m';'afraid';'I';'can''t';'do';'that'};
Pie = pie( test_values );
leg = legend(test_text,'Location','eastoutside');
drawnow % without this you can't accsses the legend entries
icons = [leg.EntryContainer.NodeChildren.Icon]; % an array with all the legend icons
leg.ItemTokenSize(1) = 0; % set the relative position of the text in the legend to x=0

% the following will probably need some fine tuning for a specific
% figure. It shifts the icons positions horizontally (i.e. only the first
% row has values other than zeros):
shift = [10    10     17     17
         0     0     0     0
         0     0     0     0];
for k = 1:numel(icons)
    % move the icon (patch) border:
    icons(k).Transform.Children.Children(1).VertexData = ...
    icons(k).Transform.Children.Children(1).VertexData+shift;
    % move the icon (patch) fill:
    icons(k).Transform.Children.Children(2).VertexData = ...
    icons(k).Transform.Children.Children(2).VertexData+shift;
end

% the following will probably need some fine tuning for a specific
% figure. It expands the legend box horizontally:
shift = [0    0     1     1
         0     0     0     0
         0     0     0     0];
leg.BoxEdge.VertexData = leg.BoxEdge.VertexData+shift; % the box border
leg.BoxFace.VertexData = leg.BoxFace.VertexData+shift; % the box face