6.13 ABC

R figure

Python figure

Code

import matplotlib.pyplot as plt

h = 500
w = 500
grid_step = 100

plt.figure(figsize=(6, 6))
plt.xlim(0, w)

(0.0, 500.0)

Code

plt.ylim(0, h)

(0.0, 500.0)

Code

plt.xlabel("Negatives")
plt.ylabel("Positives")
plt.xticks([])

([], [])

Code

plt.yticks([])

([], [])

Code

plt.gca().set_aspect('auto')

gx = grid_step
while gx <= w:
    plt.axvline(x=gx, color='gray', linestyle='dotted')
    gx += grid_step

gy = grid_step
while gy <= h:
    plt.axhline(y=gy, color='gray', linestyle='dotted')
    gy += grid_step

x = [0, 0, 100, 300, 500]
y = [0, 200, 400, 500, 500]
col = "red"
plt.plot(x, y, linewidth=3, marker='o', color=col)

plt.text((x[0]+x[1])/2+20, (y[0]+y[1])/2+40, "-B-", color=col)
plt.text((x[1]+x[2])/2-20, (y[1]+y[2])/2+20, "-BC", color=col)
plt.text((x[2]+x[3])/2-20, (y[2]+y[3])/2+20, "AB-", color=col)
plt.text((x[3]+x[4])/2-85, (y[3]+y[4])/2-15, "A--, --C", color=col)

a = [0, 100, 400, 500, 500]
b = [0, 400, 500, 500, 500]
col = "blue"
plt.plot(a, b, linewidth=3, marker='o', color=col)

plt.text((a[0]+a[1])/2+20, (b[0]+b[1])/2-20, "B\\A", color=col)
plt.text((a[1]+a[2])/2+20, (b[1]+b[2])/2-20, "A", color=col)
plt.text((a[2]+a[3])/2+0, (b[2]+b[3])/2-20, "C\\B\\A", color=col)

plt.show()