Raw data:
| column 1 | Series 1 |
| Category 1 | 4.3 |
| Category 2 | -2.5 |
| Category 3 | 3.5 |
| Category 4 | 4.5 |
default drawing
solution
1. Select the column, double-click, and operate in the following order
2. At this time, the color will change from one to two
3. Set the second color, which is the color of negative value
Bar charts are set up in the same way
