chartType
The type of bar chart. Bars can be horizontal or vertical and the bars can be stacked (atop or in front of each other) or grouped.
Default value
Vertical bar chart with grouped bars
Valid values
Horizontal bar chart with stacked bars
Vertical bar chart with stacked bars(atop)
Vertical bar chart with stacked bars (in front)
Horizontal bar charts with grouped bars
Vertical bar chart with grouped bars
The horizontal and vertical bar charts with stacked bars only work for lists with positive values. If your data has negative values, use either the horizontal or vertical bar charts with grouped bars.