As I answer in the other topic, showing the value of custom fields in a different way need some coding. In this case, you want to display in a chart or graph, then the steps will be:
- Download a chart/graph library required CSS/JS. Depends on which library you use, the files are different.
- Enqueue a chart/graph library’s JS/CSS. This can be done in the theme with
- Get the field values (via helper functions).
wp_localize_scriptto enqueue the data.
- Write some custom JS to initialize the graph/chart.
That might sound complicated, but the whole process is just trying to pass the data of custom fields to the JS of the library. Depends on which library you use, the code might be different.