Not included LimeSurvey core, and i really think we never include something like this.
Solutions :
1. Make it via CSS only ? Must be possible
2. Make it via a js graph system
3. Make it via a php graph system (and get framagit.org/SondagePro-LimeSurvey-plugin/generateGraphQuestion for inspiration)
Solutions :
1. Make it via CSS only ? Must be possible
2. Make it via a js graph system
3. Make it via a php graph system (and get framagit.org/SondagePro-LimeSurvey-plugin/generateGraphQuestion for inspiration)