python:
1.https://python-graph-gallery.com/scatter-plot/
2.https://www.w3schools.com/python/python_ml_scatterplot.asp
3.https://jakevdp.github.io/PythonDataScienceHandbook/04.02-simple-scatter-plots.html
5.https://pythonspot.com/matplotlib-scatterplot/
6.https://pythonprogramming.net/scatter-plot-matplotlib-tutorial/
7.matplotlib : https://matplotlib.org/3.2.1/api/index.html
8.https://www.tutorialspoint.com/matplotlib/matplotlib_scatter_plot.htm
Matplotlib subplot : 1. https://medium.com/@rayheberer/generating-matplotlib-subplots-programmatically-cc234629b648
Seaborn : 1.https://seaborn.pydata.org/tutorial.html