Line chart with Upper and Lower limits

[tpulley15]

A typical finance chart shows a trended line chart that contains a primary line and also a range. This range can be set to represent any number of ranges compared against the primary line (i.e. high/low guidance, top/bottom forecast, 3 year avg., etc.). There is currently no out-of-the-box visual that supports this. The custom R charts are nice, but not flexible enough to support multiple range scenarios.