If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
Most of the industries will prefer to view the data for a particular series in Line chart or Bar chart for the analysis. I have tried the similar analysis by using the combination chart, pie chart, area chart, radar chart, line chart , barchart in a different views.