[OC] Vergleich von Websites mit Weltflaggen

I had to decide from where to download a set of world flags, and to my surprise there are big differences among major sites, not merely on the number of countries or territories covered, flag size or file format, but on more fundamental issues as the aspect ratio or the colors used in the flag.

The sources I have evaluated are:

1. [Country-Flags](https://github.com/hampusborgos/country-flags), a GitHub repository that claims to contain *accurate renders of all the worlds flags in SVG and PNG format*, **CF**.

2. [Encyclopedia Britannica](https://kids.britannica.com/students/article/flags-of-the-world/274335), **EB**.

3. The CIA’s [World FactBook](https://www.cia.gov/the-world-factbook/references/flags-of-the-world/), **FB**.

4. [Wikipedia](https://en.m.wikipedia.org/wiki/List_of_national_flags_of_sovereign_states), **WK**.

5. Worldodometer for [countries](https://www.worldometers.info/geography/flags-of-the-world/) and [dependent territories](https://www.worldometers.info/geography/flags-of-dependent-territories/), **WO**.

The details, scripts and results of the assessment are in a [GitHub repository](https://github.com/Rigonz/assessment-of-sites-with-world-flag).

The two images in the opening post include some of the results for Argentina and South Africa. The upper part presents the flags from the five sources, and the differences are already visible. The lower left part shows a color spectrogram for the combined set of flags: a normalized 3d histogram in the RGB color space. The chart in the lower right part is a representation of the relative errors of the color usage (taking as reference the flag from one of the sources).

I don’t exactly know what’s going on here but I’m from Argentina and I’ve seen all of those representations for our flag, even in its physical format in all kind of institutions. I don’t think we have an standard format, even if there’s some kind of formal rule on how it should look like.