Creation of Dendrogram - Combination of Wiki - Search.R and Server.R - R - Programming Assessment Answer

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R - Programming Assessment Answer

TASK: Part 1 Modify the Shiny Wikipedia Search App shown in example 4.4 to: 1. Replace the current visual display (dendrogram) with a word cloud() of the 50 most frequent words found in part 1. o It might help to decide what parts of server.R and/or wikiSearch.R create a dendrogram (and delete these parts) while keeping the parts of server.R and/or wikiSearch.R that will help you create a word cloud. o Some of you might prefer to combine wikiSearch.R and server.R into a single file. 2. Add functionality to the same app to display the 50 most frequent terms and the number of times they occur in the Wikipedia web pages that were retrieved based on the user selection. You need to put the words into a data frame and learn how to output a data frame in Shiny. One way to do this is with table output() in the ui.R and renderTable() in the server.R and/or wikiSearch.R. o Ensure the same words show in the word cloud and the table. Part 2 In past sessions, many students have attempted to solve part B, problem 1 with code that essentially simplifies to plot(word cloud(…)). Explain why this does not work.

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