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Full Version: Matplotlib is all messed up!
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Hi! I created a convex hull algorithm in c and it outputs all the points and the convex hull into datapoints.txt and convexhull.txt.
However, when I use the code below matplotlib scrambles all the axis. Meaning that x-axis may be correct but the y one goes 5 20 10.

Is there any way to force matplotlib to simply draw a point on the coordinate that I read from a file?
import matplotlib.pyplot as plt

f = open("dataset.txt", "r")
data =

data = data.split("\n")
data = data[:len(data)-1]
for datapoint in data:
    splitdata = list(datapoint.split(" "))
    plt.plot(splitdata[0], splitdata[1], "ro")
10 10
15 5
16 10
16 20
30 10

Note: I remove the last element of data because Atom forces a newline on save...

Thanks! Smile
You made the same stupid mistake as me! Tongue
Why might the "numbers" on the y-axis not be in numerical order?... Think