Getting to know the layout attribute

For the current figure that we are working on, let's add a title (for the whole figure), along with axis titles, to see how it works:

fig.layout.title = 'The Figure Title'
fig.layout.xaxis.title = 'The X-axis title'
fig.layout.yaxis.title = 'The Y-axis title'

As you can see, we are exploring the tree-like structure of our figure. There is a title attribute that falls directly under fig.layout, and there are also titles for fig.layout.xaxis and fig.layout.yaxis. To give you a sense of how detailed the available options are, Figure 3.3 shows some of the xaxis attributes that start with tick only:

Figure 3.3 – Some of the Figure object's layout.xaxis options

Let's now look at the effect of the four lines of code we just added:

Figure 3.4 – The updated figure containing two traces, a legend, and titles

The three titles we have...