在Matlab中居中直方图图元并设置百分比范围 [英] Centering histogram bins and setting percentage range in Matlab

问题描述

我正在Matlab中进行数据分析，并将离散值(1-15)的频率绘制成Matlab上的直方图.我想将垃圾箱居中，以使第一个垃圾箱的中心位于值1上，第二个垃圾箱的中心位于值2上，等等.

I'm doing data-analysis in Matlab and I'm plotting the frequencies of discrete values (1-15) into a histogram on Matlab. I would like to center the bins so that the center of 1st bin is on value 1, center of the 2nd bin is on value 2, etc.

我也想获得Y轴的百分比范围.任何快速的想法如何做到这一点?这是一张突出我的问题的图片:

Also I would like to get percentage range for the Y-axis. Any quick ideas how to do this? Here is a picture highlighting my question:

推荐答案

首先使用 hist 与您的预期中心.然后使用bar和xlabel以所需的方式显示带有y轴的直方图:

Start by using hist with your expected centers. Then use bar and xlabel to display the histogram with the y axis the way you want:

dat = randi(15,100,1);
centers = 1:15;
counts = hist(dat,centers);
pcts = 100 * counts / sum(counts);
bar(centers,counts)
ylabel('%')

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