May 2019
Beginner to intermediate
266 pages
5h 57m
English
Content preview from Hands-On Exploratory Data Analysis with R
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Mapping and understanding data structure
This section involves understanding each and every attribute in depth, which is considered to be important for the dataset indicated:
- Try to get a feel for the data as per the attribute structure by executing the following command:
> class(Autompg) [1] "data.frame"
The output shows that the dataset is merely a tabular format of a data frame.
- Check the dimensions of the dataset by executing the following command:
> dim(Autompg)[1] 398 9
This means that the dataset comprises 398 rows and 9 columns. The column structure is discussed in the first section.
- View the column names of the dataset as follows to establish whether they correspond to the records included in the Excel file:
> colnames(Autompg) ...
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