PIL image size adjustment-CodePudding

I want to repeat the drawing made in matplotlib in PIL. Perhaps the problem is that my data format is "4.005,4.006". How to make the same graph in PIL?

from PIL import Image, ImageDraw
import numpy as np
N = 461
x = np.linspace(0, 4*np.pi, N)
y = np.sin(x)
y=y 50
im = Image.new('L', (N, N))
draw = ImageDraw.Draw(im)
for i in range(len(x)-1):
    draw.line((x[i],y[i], x[i 1], y[i 1]),fill='red',width=2)
im.show()
# this is the graphic i want to get
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot(x, y)
plt.show()

Thanks in advance

CodePudding user response：

Your x,y values need some shifting and magnification to somewhat resemble matplotlibs plot. I am not very good in plotting. This is what I could do. You can fine tune further.

from PIL import Image, ImageDraw
import numpy as np
N = 300
x = np.linspace(0, 4*np.pi, N)*200
y = np.sin(x)*200 250
im = Image.new('RGB', (500, 500), color=(255, 255, 255))
draw = ImageDraw.Draw(im)
for i in range(len(x)-1):
    draw.line((x[i],y[i], x[i 1], y[i 1]),fill='red',width=1)
im.show()