Add flag similarity script #712
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This is meant as an aide to determine whether two flags are similar or not. It does not replace visual comparison, but it does replace the extracting colours from the SVGs and inputting them into the ΔE* spreadsheet.
Testing (not systematically) it seems that the script correctly regenerates the colour difference values we had obtained with the spreadsheet:
https://github.com/anki-geo/ultimate-geography/wiki/Flag-similarities
(Approximately: we use a slightly different conversion factor from the reference spreadsheet, but I believe that our factor is the correct one.)
Writing the script turned out considerably more time-consuming than expected at the outset, due to increasing numbers of edge-cases...
The script is messy and I'm not sure whether anyone other than myself will find it useful, but given that it's been written, having it is IMO better than not having it...
In the cases where there are few colours, it works well:
but when there are many, it becomes messy: