I have a shapefile to which I joined two tables from a MySql database. I used one column of the first table to color the polygons in my shapefile which works fine. Three columns out of the second table should now be used to produce a pie chart on top. I can easily select those features, so the join worked. However, no pie chart is drawn. "Display diagrams" is checked. I tried the following so far:
- Change diagram type (Did not work)
- Try to display a value from the first table instead of the desired table. (Did not work)
- Changing the priority from low to high. (Did not work)
- Delete the first table.(Did not work) QGIS is not drawing anything.
The log for errors and warnings are completely empty. Does anyone has an idea? Thanks in advance.