Set bar thickness in a barChart



in my app, the user can enter data. These data is displaed in a combined line and bar chart. The xAxis is a date-axis.

When there are only few values, which need to be displayed in the bar chart, the bars cover nearly a full day or even more. When the user enters more and more data, the bars get thinner and thinner.

Any way to set a maximum thickness for the bars, to prevent the first bars from being unneccessary fat?

Best regards,