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## Add a Caption and Label

Raw

Adding a caption (which automatically also adds a label) is done using fig.cap=.

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We have also used (but can't see) fig.pos="h" which requests placement of the figure “here” rather than letting it float. Other options are to place the figure at the top of a page ("t"), or the bottom of a page ("b"). We can leave it empty and the placement is done automatically—that is, the figure floats to an appropriate location.

Once a caption is added, a label is also added to the figure so that it can be referred to in the document. The label is made up of fig: followed by the chunk label, which is myfigure in this example. So we can refer to the figure using \ref{fig:myfigure} and \pageref{fig:myfigure}`, which allows us to refer to Figure 22.1 on Page .