Dirty data refers to data that can suffer from all sorts of problems, including, but not limited to, things such as erroneous or conflicting entries, missing values, and outdated data. Tidy data is the opposite, data that is in a nice format, with no inconsistencies or other issues.Kampakis, Stylianos
Let’s create a pivot table as in Microsoft Excel using these data!Example: Make Pivot Table Using dcast() Function of reshape2 PackageIn this example, I’ll illustrate how to create a pivot table in the R programming language.First, we have to install and load the reshape2 package:...
There are base functions to accomplish these tasks, but I focus on those in plyr, reshape2, and data.table.While the tools covered in this chapter still form the backbone of data reshaping, newer packages like tidyr and dplyr are starting to supersede them....
Converting it to polar coordinate system to make it round. Adding data labels and colors - supplied as hex codes. Adding the title, removing axis labels, and removing a lot of the default theme. There are a wide range of additional properties that can be modified in the ggplot2 package in...
Step 1: Create a Tidy data frame The very first step in creating visualizations is to get the data in a useful format. In the case ofSankey diagrams, the trick is to get the data into the tidy data format. This post uses a simple example to make it clear how everything fits together...
Back To Basics, Part Uno: Linear Regression and Cost Function An illustrated guide on essential machine learning concepts Shreya Rao February 3, 2023 6 min read Must-Know in Statistics: The Bivariate Normal Projection Explained Data Science
Obviously though, we don’t do this manually. As data scientists, we use a programming language like R to do all of these calculations for us and plot the result. Let’s quickly discuss how we can create histograms in R. How to create a histogram in R ...
One of the toughest parts of data analysis is preparing your data to be analyzed. We often have to deal with problems like NAs, typos, and data that are formatted incorrectly. In this blog post, I’m specifically going to help you with that last o...
How to Clear Cached Data Websites store information on any device that can access the web, including both computers and mobile devices. We'll walk through a few examples to help you understand how to tidy up. Clear your cache oncommon web browsers, such as: ...
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