November 2018
Beginner to intermediate
420 pages
10h 4m
English
book
Hands-On Data Science with R
by Doug Ortiz, Vitor Bianchi Lanzetta, Nataraj Dasgupta, Ricardo Anjoleto Farias
Content preview from Hands-On Data Science with R
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Histograms
Histograms are used to visualize count data. The chart consists of bars with a y axis representing the count and the x axis representing the data. The following code demonstrates the use of the hist function in R:
# Data Visualisation
library(car)
library(RColorBrewer)
data("Salaries")
# Histogram of Salaries of Professors from the Salaries dataset
hist(Salaries$salary/1000, main="Histogram of Salaries", xlab="Salary (in '000s)", ylab="Count")
The output of the preceding code is as follows:
We will be running the same code with a minor change of col=brewer.pal(8,"Reds"). This will provide you with the same output as the previous ...
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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.