Font reading and display of dot matrix Chinese characters and file transmission through serial port
1, Serial port transmission file 1. Serial port connection Cross connect the RXD and TXD pins of the two USB TO TTL seri...
PCA topic of R language principal component
12.3 Based on the principal component analysis of the scores of 50 students in the table below, how many comprehensive v...
Python notes: drawing nine visual graphics with Pyecharts
First install the module
conda install pyecharts perhaps ...
If the COVID-19 epidemic as a stock factor
This paper uses the WindAlpha single factor research framework of wankuang platform to explore the impact of COVID-19 ep...
R script reading summary Excel table data
It mainly uses xlsx and rJava package, opens Excel file, reads data of each table, and writes it to summary table. The following figure shows the ori...