Having only browsed both Plotly and this project, this is my understanding: Plotly seems like its just the charting/graphing layer. A common use case (and incr

Having only browsed both Plotly and this project, this is my understanding: Plotly seems like its just the charting/graphing layer. A common use case (and increasingly an expectation) is that a series of graphs on a single page be responsive and cross filterable. For instance, if you click on a single element on one chart, it should filter the related charts accordingly. Additionally, these filters should build on each other and the developer/analyst should be able to define that. Really, you're now doing a form of data modelling and in the domain of BI, and Plotly isn't going to help you figure any of this out. Tableau and Power BI have gotten traction by building products that not only include but prioritize this form of modelling. Once you define your data model, you get the multi dimensional charting for free. The appeal to me of this library (not having done a thorough G2) is an open source alternative to those products that integrates charts and data modelling easily.