Matlab uses histfit to draw histogram + fitting curve

Picture effect

1 Data format

An array should be prepared double. If it is csv or xlsx directly dragged into matlab, it is a table type, which cannot be used as a drawing parameter.
If it is a table type, it can be table2array(data)converted using

2 Drawing steps

This article does not use scripts, only uses the command line , and only one function is needed to draw a simple histogram with a fitting curve histfit, which is also the combined abbreviation of histogram and fitting.

1. To load your data, first drag the data in, no matter what method you use, and drag it into the workspace on the right.
   For example, I have a data exported by Excel called demo, then I will demo= table2array(demo)get the double demo and work at this time The demo of double will be displayed in the area.
2. drawing

% 简单出图
histogram(demo)   

% 修改直方图柱子数量，想写多少写多少
histogram(demo，20)   

% 改变柱子颜色，这个语法和histogram不同！！！
h(1).FaceColor = "g";

% 简化代码，令h代表histogram
h = histogram(demo，20) 

% 为了出图好看，限制x轴的区间范围
xlim([-5, 5])

% 改变滤波算法为'kernel'
h = histogram(demo，20，'kernel') 

% 添加xy轴的标题，大标题
xlabel('value')
ylabel('count')
title('demooooooo')

% 添加图例，这个需要自己调整图例的指向顺序
legend({
    
    'Statistical','Fitted curve'},'Location','southwest')

3 postscript

Most of the syntax of histfit and histogram is the same, but there are some differences in the color of the bar

References:
https://ww2.mathworks.cn/help/stats/histfit.html
https://ww2.mathworks.cn/help/matlab/ref/matlab.graphics.chart.primitive.histogram.html?s_tid= doc_ta#d124e606591

The pictures made in matlab can be exported as eps in the later stage and then refined in AI, so it is enough to make a rough picture in matlab

$$Thanks\; to\; roommate\; Xianqiang\; for\; his\; help!!$$

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thanks for reading