I was trying to create a data visualization with this style in illustrator
by using these shapes from a chart data
Obviously you can create this using blend tools and path, however, if it's from a chart or data, it should be as close as possible. I can manually adjust the shape but if its like 100-200 lines, it's going to be time consuming and wouldn't be accurate.
I wonder if there's an easy way.
You could use an Art Brush to do this. You will need to make each line a single stroke though, and you'll need to create an empty spacer at the end of the brush. If you have all the data in a raster image of the graph, you could use Image tracing using the Outline trace option to actually create the lines.
Anyway, here's an example
A brush like this shown here. I've used a repeating pattern here for the sake of convenience, but you don't have to. Each stroke can be any height.
Applied to a circle as an Art Brush
It can also be applied to just part of a circle, here I added some anchors to delete some segments of the circle
