mozilla/metrics-graphics — pull request #128 by tlatorre-uchicago (2014-08-27 18:24:14+00:00)
Title: Fixes issue #98

- set the bounding box to be halfway between the previous point and the next point. This should make the rectangles behave saner when there are different spacings in the data.

- It would probably be better to calculate the pixel location from `args.scalefns.xf()` once, as it now is recomputing this value 3x over, but I kept the code closer to the previous style.