Elements
The element options can be specified per chart or globally. The global options for elements are defined in . For example, to set the border width of all bar charts globally you would do:
Point elements are used to represent the points in a line chart or a bubble chart.
The following values are supported:
'circle'
'cross'
'crossRot'
'line'
'rect'
'rectRounded'
'rectRot'
'triangle'
If the value is an image, that image is drawn on the canvas using drawImage.
Line elements are used to represent the line in a line chart.
Rectangle elements are used to represent the bars in a bar chart.
Global rectangle options: Chart.defaults.global.elements.rectangle
Global arc options: Chart.defaults.global.elements.arc
.