Incorporating Symbols
Jon J. Raasch, Graham Murray, Vadim Ogievetsky, Joseph Lowery · 2014
This chapter explores charting types, such as line and area, that provide an interpolated shape that connects all the data points. When dealing with such an interpolated shape, it can be useful to use a symbol, or marker, to indicate exactly where the underlying data values occur in the x-y space of the plot area. The chapter explains the mechanics of displaying symbols in charts. It teaches how to create a line chart using D3 and added symbols to it and start by using D3 to construct and display symbols at a very low level. It also shows how markers can be represented in a comparatively high-level API that can do a lot of the footwork for you. The chapter also shows how to create area series using the Ignite UI igDataChart charting API, and add symbols to the igDataChart Area series. Finally, a bubble chart using igDataChart is created.