Coordinate Systems, Transformations, Faceting, and Axes
The previous chapter looked at the use of time as a single, 1-D coordinate, presented as a simple line. This chapter goes beyond that use to present a range of additional options and techniques for the use of time as a coordinate. Beyond one dimension, we will look at using time as part of a multidimensional coordinate system, introduce transformations of such systems, and consider time displays within a faceting and using time data to facet other charts. We will consider details of the presentation such as aspect ratio, axes and tick marks, and scales. In short, this chapter explores how to make the most of an already powerful technique, time as a coordinate.