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To name the axis and assign a title to a graph, the Matplotlib offers the following methods:
            ●  plt.xlabel(): This function is used to set the label for the x-axis of the plot. It accepts a string as an argument
              that denotes the label for the x-axis.
            ●  plt.ylabel(): This function is used to set the label for the y-axis of the plot. It accepts a string as an argument.
              that denotes the label for the y-axis.
            ●  plt.title(): This function is used to set the title for the plot. It takes a string as an argument that denotes the
              title of the graph.

            The following code snippet labels x-axis and y-axis as time and velocity, respectively. It also assigns the caption Time
            vs. Velocity to the graph (Fig 3.6).

             >>> import matplotlib.pyplot as plt
             >>> time = [2, 4, 6, 8, 10]
             >>> velocity = [30, 40, 60, 35, 10]
             >>> plt.plot(time, velocity, 'r*-.', linewidth = 1.5, markersize = 15, markerfacecolor = 'y',
                 markeredgecolor = 'b', markeredgewidth = 1)
             >>> plt.xlabel('Time')
             >>> plt.ylabel('Velocity')
             >>> plt.title('Time vs. Velocity')
             >>> plt.show()


























                                                      Fig 3.6: Time vs. Velocity


                  To name the axes and assign a title to a graph, the Matplotlib offers the following methods:
                  plt.xlabel(): This function is used to set the label for the x-axis of the plot. It accepts a string as an argument
                  that denotes the label for the x-axis.
                  plt.ylabel(): This function is used to set the label for the y-axis of the plot. It accepts a string as an argument
                  that denotes the label for the y-axis.
                  plt.title(): This function is used to set the title for the plot. It takes a string as an argument that denotes the
                  title of the graph.



            Using Default Values along x-axis
            While invoking the method plt.plot, sometimes it is convenient to use the standard coordinates on x-axis: 0, 1, 2,
            3, and so on. Thus, it is enough to provide only the sequence of y-coordinates.  This default feature makes it convenient
            to draw  simple line plots without the need to specify the x-coordinates explicitly.




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