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SAR is calculated incorrectly

[edit]

On the page List of common resolutions you can see 372x240 being listed as 17:11. This seems to be caused by some rounding error, it's supposed to be 31:20. At time of writing just default calculated by this template as X/Y, so it's not the page itself that has used an incorrect override. Philipborg (talk) 09:40, 5 March 2024 (UTC)[reply]

That’s done by {{resratio}}. It doesn’t support 31:20 (yet), because it’s not a common aspect ratio – whereas 17:11 is “common” in American paper formats: — Christoph Päper 10:33, 5 March 2024 (UTC)[reply]
Input “Pretty” output Float output Actual
372×240: 31∶20 ≈ 1.55  1.55 = 31:20 = 15½:10
240×372: 15∶17 ≈ 0.6452 20:31
360×240: 3∶2 ≈ 1.5 3:2 = 15:10
368×240: 23∶15 ≈ 1.5333 23:15 = 15⅓:10
376×240: 47∶30 ≈ 1.5667 47:30 = 15⅔:10
384×240: 8∶5 ≈ 1.6 8:5, 16:10
17×11: 17∶11 ≈ 1.5454
31×20: 31∶20 ≈ 1.55
1.54: 17∶11 ≈ 1.5454
1.545: 17∶11 ≈ 1.5454
1.55: 1.55 ≈ 1.55
1.555: 14∶9 ≈ 1.555
1.56: 14∶9 ≈ 1.555