input a csv data of persistence pairs and display its graph.
This is a program for processing version 3.
You need to write the csv file name (removing '.csv') in line 1 of sketch_displayPP.pde .
If you keyPressed, the picture is saved as a PNG file.
If you want to change colors, see lines 52-56 of sketch_displayPP.pde
The input file has an extension '.csv'
The file is a text file and each of lines consists of
[dimension],[barthtime],[deathtime]