November 2017
Intermediate to advanced
502 pages
11h 21m
German
Content preview from R für Data Science
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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.
KAPITEL 9
Daten aufbereiten mit tidyr
Einführung
Happy families are all alike; every unhappy family is unhappy in its own way.
– Leo Tolstoy
Tidy datasets are all alike, but every messy dataset is messy in its own way.
– Hadley Wickham
In diesem Kapitel lernen Sie eine konsistente Methode kennen, um Daten in R zu organisieren – eine Organisation die man als aufbereitete Daten (tidy data) bezeichnet. Um Ihre Daten in dieses Format zu bekommen, müssen Sie vorab etwas Arbeit investieren, die sich jedoch auf lange Sicht auszahlt. Nachdem Sie über bereinigte Daten und Tools zum Bereinigen verfügen, die die Pakete im Tidyverse bereitstellen, müssen Sie viel weniger Zeit investieren, um Daten von einer Darstellung in eine andere zu überführen. Folglich ...
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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.