All charts with points looking like bars (Bar, Column, and related types) allow you to set the size of the points: the width, the maximum width, and the minimum length.
Please note that you can configure either the whole chart or an individual series.
In Bar, Column, and related chart types the width of points is calculated automatically: it depends on the size of the chart and the number of points. However, you can set a fixed width (in pixels or in percent) by using the pointWidth() method of the class your chart or series belongs to:
// set the width of points column1.pointWidth(20);
You can set a limit to the width of points (in pixels or in percent) by using the maxPointWidth() method of the class your chart or series belongs to:
// set the maximum width of points column1.maxPointWidth("15%");
When the magnitude of difference between values is too high, some elements with low values might look too small and be difficult to interact with. In this case you can make them bigger by setting the minimum length (in pixels or in percent). Using the minPointLength() method of the class your chart or series belongs to:
// set the minimum length of points column1.minPointLength(10);