If the bar chart disappears when you change the axis Scale to Log (base 10) or Ln (natural log), the issue is most likely caused by the bar chart starting value. To correct this:
- Click on the Bar Chart in the Object Manager to select it.
- In the Property Manager, click on the Plot tab.
- Change the Base value from 0 to a value slightly larger than 0, such as 0.01, 0.1, etc.
The bar chart will reappear, with the bars starting at the slightly larger value.