Histograms in R language

A histogram contains a rectangular area to display the statistical information which is proportional to the frequency of a variable and its width in successive numerical intervals. A graphical representation that manages a group of data points into different specified ranges. It has a special feature that shows no gaps between the bars and is similar to a vertical bar graph.

We can create histograms in R Programming Language using the hist() function.

Syntax:

hist(v, main, xlab, xlim, ylim, breaks, col, border)

Parameters:

• v: A vector containing numerical values for the histogram.
• main: The title of the chart.
• col: The color of the bars.
• xlab: The label for the x-axis.
• border: The border color of each bar.
• xlim: The range of values for the x-axis.
• ylim: The range of values for the y-axis.
• breaks: The width of each bar.

1. Creating a simple Histogram in R

Creating a simple histogram chart by using the above parameter. This vector v is plot using hist().

Example:

Output:

1.1 Range of X and Y values

To describe the range of values we need to do the following steps: 

1. We can use the xlim and ylim parameters in X-axis and Y-axis.
2. Take all parameters which are required to make a histogram chart.

Example

Output:

2. Using histogram return values for labels using text()

To create a histogram return value chart.

Output:

3. Histogram using non-uniform width

Creating different width histogram charts, by using the above parameters, we created a histogram using non-uniform width.

Example

Output: