R language learning notes (2) -- Reading data from a file

1. Use getwd () to get the current working directory, and setwd ("E:/rproject") to set the working directory.

Note that it is a slash rather than a backslash.

2. Read. Table ()

Mydata = read. Table ("filepath/FILENAME"), read data from filename, and create an object named mydata in the Data box.

Detailed Syntax of read. Table, use? Read. Table.

3. Scan to read files

Scan is more flexible than read. Table. You can specify the type of the read variable, and scan can be used to create different objects such as vectors, matrices, and data boxes. By default, scan creates a vector.

4. Read. fwf () to read files

Read. fwf () is used to read some data in fixed-width format in the file.