October 2017
Intermediate to advanced
532 pages
16h 10m
English
Content preview from Pandas Cookbook
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
How to do it...
- Now that we know how to select plotting elements and change their attributes, let's actually create a data visualization. Let's read in the movie dataset, calculate the median budget for each year, and then find the five year rolling average to smooth the data:
>>> movie = pd.read_csv('data/movie.csv')>>> med_budget = movie.groupby('title_year')['budget'].median() / 1e6>>> med_budget_roll = med_budget.rolling(5, min_periods=1).mean()>>> med_budget_roll.tail()title_year
2012.0 20.893
2013.0 19.893
2014.0 19.100
2015.0 17.980
2016.0 17.780
Name: budget, dtype: float64
- Let's get our data into NumPy arrays:
>>> years = med_budget_roll.index.values>>> years[-5:]array([ 2012., 2013., 2014., 2015., 2016.])>>> budget = med_budget_roll.values ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.