Miscellaneous topics

In this section, we will look at a few other data-related topics. The following will be covered:

• Checking data quality
• Reading binary files: Excel, SAS, and other data sources
• On-disk formats
• Working with web data

Checking data quality

There are several inbuilt functions as well as packages for checking the quality of data in R. The most commonly used among them is the summary function in base R:

## Packages Used: 
## psych, pastecs, dataMaid, daff 
 
# install.packages(c("psych","pastecs","dataMaid","daff")) 
 
state <- data.frame(state.x77) 
state$State <- row.names(state) 
state 
 
 
summary(state) 

The output of the preceding code is as follows:

library...