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Hello!
I’m trying to plot a bar graph from Data Science from Zero, but it’s very different from the book. Note: the book is in Python 2 and I am using Python 3
In the book, is:
from collections import Counter
friends_counts = Counter(num_friends)
xs = range(101)
ys = [friends_counts[x] for x in xs]
plt.bar(xs,ys)
plt.axis([0, 101, 0, 25])
plt.title('Histograma da contagem de amigos')
plt.xlabel('# de amigos')
plt.ylabel('# de pessoas')
plt.show()
Which results in:
Mine, it’s like this:
The variable "friends_counts" stores:
friends_counts
Counter({100: 1, 49: 1, 41: 1, 40: 1, 25: 1})
I’m not getting the result of the book... Thank you very much!!
Looking through the code, since the variable
friends_countsstores onlyCounter({100: 1, 49: 1, 41: 1, 40: 1, 25: 1}), the result you had was expected. By the graph generated in the book, this variable has much more values.– ThRnk
If you look in the book, the correct description for num_friends is [100, 49, 41, 40, 25, and many more]. The problem is "and many more". In chapter 1 there is an explanation that it is a graph problem (who is friends with whom) and shows how to calculate the complete list of friends (which has 204 elements).
– Gomiero