Earthquake stacked bar graph

I was using lab computer, but it didn’t allowed me to use screen recorder software to get a gif.

Code:

import csv
def setup():
    size(800, 200)
        
with open('\Documents\Processing\Assignment_3\sketch_170927b\quakes.csv') as f:
        reader = csv.reader(f)
        header = reader.next() # Skip the header row.
       
        global magnitudes
        
        magnitudes = []
        for row in reader:
            magnitude = float(row[4])
            magnitudes.append(magnitude)
            
    
def draw():
    background(0)
    scalar=10
    x = 0

       
    for magnitude in magnitudes:
        
        upperEdge = x
        lowerEdge = x + 20
        
        line(0,height/2,width,height/2)
        
        if upperEdge < mouseX and mouseX < lowerEdge:
            fill(255,0,0)
            rect(x, height/2, 5,(magnitude*scalar)*(-1))
        else:
            fill(255,255,255) 
            rect(x, height/2, 5 , (magnitude*scalar)*(-1))
        x += 5