Exercise

Annotating a plot of time-series data

Annotating a plot allows us to highlight interesting information in the plot. For example, in describing the climate change dataset, we might want to point to the date at which the relative temperature first exceeded 1 degree Celsius.

For this, we will use the annotate method of the Axes object. In this exercise, you will have the DataFrame called climate_change loaded into memory. Using the Axes methods, plot only the relative temperature column as a function of dates, and annotate the data.

Instructions

100 XP

Use the ax.plot method to plot the DataFrame index against the relative_temp column.
Use the annotate method to add the text '>1 degree' in the location (pd.Timestamp('2015-10-06'), 1).