File:SparqlCharts Multi-Bar Chart stacked.png

Screenshot of the SparqlCharts extension, showing the "multi-bar chart" format. This format makes use of D3.js and NVD3. D3.js is a JavaScript library distributed under the BSD 3-Clause License. NVD3 provides re-usable charts and chart components for D3.js and is distributed under the Apache License, Version 2.0, see here.