Waffle Chart is an alternative to pie chart for displaying data in relation to the whole.
Key implementation details
To implement a Waffle chart with amCharts we use our trusty XY Chart. The trick here is that we use a Category axis for both X and Y axes. This way we can crate a grid with no values in-between grid lines.
Then we set
openCategoryYField in addition to the regular category fields on the column series to specify the starting positions of the values.