[Solved] Given the code below, what will be the length of the simplified path vertices? import matplotlib.... Given the code below, what will be the length of the simplified path vertices? | Matplotlib

Matplotlib - Performance and Large Data

Given the code below, what will be the length of the simplified path vertices?

import matplotlib.path as mpath
import matplotlib.pyplot as plt

verts = [(0, 0), (0.1, 0.1), (0.2, 0.2), (5, 5)]
p = mpath.Path(verts)
p._simplify_threshold = 1.0
simplified = p.cleaned()
print(len(simplified.vertices))

A2

B4

C3

D1

Step-by-Step Solution

Solution:

Step 1: Understand the original vertices
Original vertices are 4 points: (0,0), (0.1,0.1), (0.2,0.2), (5,5), all colinear on the line y=x.
Step 2: Effect of _simplify_threshold and cleaned()
With threshold 1.0, cleaned() removes intermediate vertices where perpendicular distance to neighboring segment is < threshold. Since distances are 0, it reduces to endpoints.
Step 3: Count simplified vertices
After simplification, 2 vertices remain: (0,0) and (5,5).
Final Answer:
2 -> Option A
Quick Check:
cleaned() on colinear points = 2 [OK]

Quick Trick: cleaned() returns simplified path based on threshold [OK]

Common Mistakes:

Assuming cleaned() returns original vertices
Ignoring threshold effect on colinear points
Expecting all points to be removed

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More Matplotlib Quizzes

Given the code below, what will be the length of the simplified path vertices?

Step 1: Understand the original vertices

Step 2: Effect of _simplify_threshold and cleaned()

Step 3: Count simplified vertices

Final Answer:

Quick Check:

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