Matplotlib common charts

Broken line diagram

It can display contact data that changes over time , Therefore, it is very useful for displaying the trend of data at equal time intervals .

Applicable type

1. Basal body temperature curve

2. Student achievement trend chart

3. Stock charts

4. Monthly sales statistical analysis chart

5. Statistics of website visits

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  Simple histogram

Also known as bar graph , Histogram , Bar chart . It's a statistical chart with the length of the rectangle as the variable .

Applicable type

Compare two or more data , It is suitable for small data set analysis

Grammar format

plt.bar(x,height,width,*,align='center',**kwargs)

x yes x Axis data

height Is the height of the column , It's also y Axis

align Is alignment

kwargs It's a keyword parameter , Other optional parameters , Such as color,alpha,label

Basic histogram

The usage is similar to what

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Multi histogram

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Basic histogram

Also known as mass distribution diagram , There are a series of longitudinal stripes or line segments with different heights to represent the data distribution .

grammar

plt.hist(x,bins)

x It's a dataset

bins Is the interval distribution of statistical data

 

Pie chart  

It is often used to show the proportion of each part in the whole

grammar

plt.pie(x,labels,colors,labeldistance,autopct,startangle,radius,center,textprops)

x Is the proportion of each pie chart

labels Is the explanatory text displayed on the outside of each pie chart

labeldistance Is the drawing position of the mark , The ratio to the radius , The default value is 1.1

autopct Is to set the percentage of pie chart , You can use a formatted string or format function

startangle Is the starting drawing angle , The default is x The axis is drawn counterclockwise

radius Is the pie radius , The default value is 1

center Is a list of floating point types , Optional parameters , The default value is 0.0 Indicates the center of the chart

textprops Is to set the format of labels and proportions , Dictionary type

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