Matplotlib drawing tips

Automatically close after displaying the graph ：

Use plt.show() If it is not closed manually, the program will get stuck ;

Problems encountered in practice ： Use plt.show() After that, you can display the required diagram , If it is not used, it will not display correctly , But it needs to produce a large number of drawings , It can't be turned off manually , Instead of plt.show()

plt.pause(0.01)  #  Show seconds 
plt.close()

Automatic shutdown through multithreading fig Methods ( Fail to succeed )

matplotlib Call Multithread to turn off graphic display when drawing _ Xiaodongxie's blog -CSDN Blog _matplotlib Close after drawing

Set line type ：

Use plt.plot() Draw a straight line , You can use linestyle Set line type ;“：” Said the dotted line ( green ),“--” It's the dotted line ( blue )

Custom properties ：color（ Color ）marker（ The shape of the marker ）linestyle（ Line shape ）linewidth（ Line width ）marksize（ The size of the mark ）label（ label , For legend ）

marker：S --> A solid square  P --> Solid Pentagram  O --> Solid round * --> Stars  D --> The diamond

linestyle：-  Solid line  ：  Dotted line  –  Broken line  -.  Draw a dotted line

figure：

Create a global drawing area ,facecolor=None Is a colorless background
plt.figure(figsize=None, facecolor=None)  # figsize(a,b) Parameters in a Is the width of the plot area ,b Is the height
 

Display Chinese and font settings ：

Mark the median size of the drawing ：

plt.text(a,b,b)  # data display x Corresponding position of shaft 、 The height of the displayed position （ You can adjust ）、 The size of the displayed data value
for a, b in zip(x, highest): # Use for The loop outputs in turn zip（） Corresponding connection
    plt.text(a, b + 2, b, ha=‘center’, va=‘bottom’)

Reference resources ：

https://www.csdn.net/tags/NtjaYgwsMTY2OTUtYmxvZwO0O0OO0O0O.html

​​​​​​python Drawing of bar and line charts , And display data _ The keyboard broke the blog with a salary of more than ten thousand -CSDN Blog _python How a bar graph displays data