Chart with images for bars

[AAJ]

Hi
Can anyone help me figure out how this chart was created. I am able to recreate something similar but it changes the size of the bottle image but am unable to achieve the effect of the bottle image being filled based on the value.

TIA.

 

[Hui]

AAJ

Firstly, Welcome to the Chandoo.org Forums

Have a look at:
http://chandoo.org/wp/2011/04/13/how-to-make-a-5-star-chart/
There was also another technique discussed in the comments

 

[AAJ]

Thank you for the links. It helped. I was able to achieve something similar using an image mask on top of bar charts