sungyongchoi

import math

def rotate_vector(v, angle, anchor):
    """Rotate a vector `v` by the given angle, relative to the anchor point."""
    x, y = v

    x = x - anchor[0]
    y = y - anchor[1]
    # Here is a compiler optimization; inplace operators are slower than
    # non-inplace operators like above. This function gets used a lot, so

sungyongchoi

import matplotlib.pyplot as plt
import csv
x=[]
z=[]   
f= open("data.csv")
#append values to list
for row in csv.reader(f):
    x.append(row[0])
    z.append(row[1])