Investigate survey plots rendering issue

[MonikaFu]

Depending on pdf engine used to open the executive summary file, the plots have grey lines around them in some cases.

Preview (MacOS)

Adobe Acrobat Reader

The lines are not desirable.

AB#10964

[jdhoffa]

Bizarre! I can try to look into this today

[AlexAxthelm]

My initial guess (and stress that it's a guess) is that this is something related to the mechanisms we're using for aligning the plots, and the images not fitting in quite nicely to the hboxes that LaTeX is wrapping them in.

My other suspicion is that it might be artifacts that are related to using PNGs, rather than an SVG for example.

[jdhoffa]

Something strange I noticed looking into this... the bars seem to vary/ disappear depending on how zoomed the .pdf is (in Acrobat):

At 100% there are 4 bars:

At 125% there are only 2 bars:

[AlexAxthelm]

possibly relevant: https://tex.stackexchange.com/a/252047