title and labels not showing up in histogram

user_6437543 0
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I am having difficulty with debugging this code here. I cannot seem to figure out why the title and labels do not show. Hopefully, it is not something painfully obvious. But I have gotten this to work just fine with other graphs...

import numpy as np
import matplotlib.pyplot as plt


data =[5434, 4948, 4521, 4570, 4990, 5702, 5241, 5112, 5015, 4659, 4806,
   4637, 5670, 4381, 4820, 5043, 4886, 4599, 5288, 5299, 4848, 5378, 
   5260, 5055, 5828, 5218, 4859, 4780, 5027, 5008, 4609, 4772, 5133,
   5095, 4618, 4848, 5089, 5518, 5333, 5164, 5342, 5069, 4755, 4925,
   5001, 4803, 4951, 5679, 5256, 5207, 5621, 4918, 5138, 4786, 4500,
   5461, 5049, 4974, 4592, 4173, 5296, 4965, 5170, 4740, 5173, 4568,
   5653, 5078, 4900, 4968, 5248, 5245, 4723, 5275, 5419, 5205, 4452, 
   5227, 5555, 5388, 5498, 4681, 5076, 4774, 4931, 4493, 5309, 5582, 
   4308, 4823, 4417, 5364, 5640, 5069, 5188, 5764, 5273, 5042, 5189, 4986]

   num_bins = 10
   n, bins, patches = plt.hist(data, num_bins, facecolor='blue', 
   weights=np.zeros_like(data) + 1. / 100,alpha=0.5, ec = 'black')
   plt.title = 'Histogram of Shear Strength'
   plt.xlabel = 'Shear Strength of Ultrasonic Spot Welds'
   plt.xticks(np.arange(4000, 6000, step=200))
   plt.ylabel = 'Relative Frequency'
   plt.tight_layout()
jupyter-notebook matplotlib python
1 Answers

The module plt provides functions, what you're doing is assigning values to the plt module instead of calling the functions. Except xticks, you got that one right.

plt.title('Histogram of Shear Strength')
plt.xlabel('Shear Strength of Ultrasonic Spot Welds')
plt.xticks(np.arange(4000, 6000, step=200))
plt.ylabel('Relative Frequency')
plt.tight_layout()
user_57549920
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