A type of graph that combines a timeline chart and a bar chart I'm trying to plot a collection of items where each item has an x-range, and a y-value. The below variation of a bar chart is what I had in mind, but I can't find a software tool that appears designed to plot it.
E.g., perhaps comparing the customer satisfaction for four construction projects that took place in a 10-week period.
(Example edited for clarity)
The goal is to be able to visualize the heights of these different items, while also taking into account their possibly-overlapping ranges. A kind of combination of a timeline chart and a bar chart.
You could hack an area chart to mostly accomplish the design below, but is there a type of graph actually designed for this kind of data?
Ex:


A similar option for non-overlapping data ranges, especially where the bar area has meaning, could be a Marimekko/Mosaic plot.

