Let's assume that I have the elasticsearch index "courses", that contains the fields: name (string), tags (array)
|name | tags|
|courseA | [java,web]|
|courseB . | [python, web]|
I would like to create in Kibana a visualize component (for example pie-chart), that will count me the number of courses that appeared for each tag
Note: I am also fine with splitting the tag array field into two separated fields (tag1, tag2) if that will simplify things...