Tendency indicator for bar charts

by Moka   Last Updated January 11, 2019 12:23 PM - source

I´d like to add an indicator to my bar chart to indicate which values are better. For example sales per days: bigger/more = better vs. bankruptcies per mio residents: less = better).

Q: How do you call such an "indicator" and how can I generate one with LaTeX (like tikzpicture or bchart)?. It would also be nice to use this indicator-icon within the text.

Here is an example of a bar chart depicting a hardware performance comparison (notice the small indicator at the lower right corner, stating "► Besser" ("Besser" = better [german]).

enter image description here

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