使用“保持”时，图例在直方图中不显示正确的颜色

Question

当我使用'hold on'绘制多个直方图时，图例的颜色与第一个直方图不匹配。见下图：

我的代码如下所示：

figure(1)
h1 = histogram(y_rating2,50);

hold on

h2 = histogram(y_rating2,50);
l1 = line([rating_1_common_mean rating_1_common_mean],[0 max(h2.Values)],'Color','red','LineWidth',1.5); 

hold on

l2 = line([rating_2_common_mean rating_2_common_mean],[0 max(h2.Values)],'Color','green','LineWidth',1.5);

legend([h1 h2 l1 l2],{'Rating 1','Rating 2','Mean Rating 1','Mean Rating 2'});

注意： 我没试过就试过这个： Wrong legends when plotting histogram with `hold on`

Answer 1

您可以将FaceAlpha设置为1并在评级2后绘制等级1。例如

h2 = histogram(y_rating2, 50, 'FaceAlpha', 1);
hold on;
h1 = histogram(y_rating1, 50, 'FaceAlpha', 1);