Gain insights into R, the leading language for data analysis. Learn about its basics, advanced concepts, and practical coding to drive valuable insights from large datasets.

The digital world we live in has given companies and people access to staggering amounts of data, and anyone that can make use of that to drive valuable insights stands to benefit. The ability to work with large amounts of data is becoming a standard requirement for countless jobs across multiple industries.

Enter R, probably the most well-known language for data analysis. It's been used for years due to its robust statistical functionality, outstanding graphing ability, and extensibility through packages.

This interactive course will get you up to speed and assumes no prior knowledge of R. You'll start with the very basics and work your way up to advanced concepts like exception handling. By the time you're done, you'll be able to write detailed, useful code in R yourself.

Learn R from Scratch

The syntax for `readLines()` function is:

```r
x <- readLines("Enter:")
```

The syntax for <code>readLines()</code> function is:
<pre><code class="language-r">x &lt;- readLines(&quot;Enter:&quot;)
</code></pre>

The `readLines()` function reads a line from a file.

The <code>readLines()</code> function reads a line from a file.

```r
fileData <- file(path, fileData = "r")
```

```r
fileData <- file(path, open = "r")
```

```r
fileData <- file(open = "r", path)
```

The correct syntax for opening a `.txt` file is

The correct syntax for opening a <code>.txt</code> file is

To read a `.txt` file we just need the name of the file.

To read a <code>.txt</code> file we just need the name of the file.

By default, the `readLines()` function returns an integer type object.

By default, the <code>readLines()</code> function returns an integer type object.

The function `as.integer()` converts the given parameter to an integer type object and returns it.

The function <code>as.integer()</code> converts the given parameter to an integer type object and returns it.

The correct syntax for the `write()` function is:
```r
write(<dataToBeWritten>, <pathOfFile>)
```

The correct syntax for the <code>write()</code> function is:
<pre><code class="language-r">write(&lt;dataToBeWritten&gt;, &lt;pathOfFile&gt;)
</code></pre>

CSV stands for Character Separated Values.

CSV stands for Character Separated Values.

The function `read.csv()` returns a dataframe of values fetched from the given file.

The function <code>read.csv()</code> returns a dataframe of values fetched from the given file.

We can write a data frame to a `.csv` file.

We can write a data frame to a <code>.csv</code> file.

Getting Started

Variables

Exploring R Objects

R Operators and Notation

Conditional Statements

Loops

Functions

Input/Output

Exception Handling

Classes

Fun Challenges

Conclusion

Test Your Knowledge 7

Quiz on Input/Output in R language