November 2017
Beginner to intermediate
366 pages
7h 59m
English
Content preview from R Data Analysis Projects
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Assembling an RShiny application
Our RShiny application will be able to do the following:
- Search Twitter for a keyword/hashtag
- Display the top 100 results
- Show the sentiment for the top 100 tweets
Let us first load all the necessary libraries and authenticate into our Twitter account:
library(shiny)library(twitteR, quietly = TRUE)library(stringr)library(sentimentr, quietly = TRUE)library(dplyr, quietly = TRUE)consumer.key <- ""consumer.secret <- ""access.token <- ""token.secret <- ""setup_twitter_oauth(consumer.key, consumer.secret, access.token, token.secret)
Fill in your consumer.keys, secret, access.token, and token.secret.
Let us build the user interface part:
ui <- fluidPage( navbarPage("TweetSenti", tabPanel("Search Tweets" , textInput("search","search",value="#bladerunner") ...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,
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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.