What Does the Argument in fig.add_subplot() Represent?

Understanding the Argument in fig.add_subplot(111)

In Matplotlib, when creating a plot, you can specify multiple subplots within a single figure. The fig.add_subplot() method allows you to add individual subplots to a figure. The argument passed to this method determines the placement of the subplot.

Specifically, the argument in fig.add_subplot() is a three-digit number representing the subplot's position within the figure. This number is broken down as follows:

• First digit: Rows - Specifies the subplot's row position in the figure.
• Second digit: Columns - Specifies the subplot's column position in the figure.
• Third digit: Subplot Number - Uniquely identifies the subplot within the figure.

Example: Understanding 111

In the provided code:

<code class="python">fig.add_subplot(111)</code>

• First digit (1): Represents the 1st row.
• Second digit (1): Represents the 1st column.
• Third digit (1): Represents the 1st subplot.

Therefore, the argument 111 specifies that the subplot should occupy the top-left position in the figure, creating a single subplot that spans the entire figure area.

Example: Understanding 212

In code that utilizes multiple subplots, you might encounter the argument 212:

<code class="python">fig.add_subplot(212)</code>

• First digit (2): Represents the 2nd row.
• Second digit (1): Represents the 1st column.
• Third digit (2): Represents the 2nd subplot.

This argument specifies that the subplot should be placed in the bottom-left corner of a 2-row, 1-column figure, creating the second subplot in the figure.

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