Corrected documentation of TIFF saving arguments #4015
Merged
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Resolves #4013, which reports that the
dpi
argument in TIFF saving doesn't support '(numerator, denominator)' values as the documentation claims.The documentation was added in #369
Looking at code, this functionality was removed in #1419, where 'A tuple of more than one rational tuples' 'flatten to floats' was removed, along with
ifd[X_RESOLUTION] = _cvt_res(dpi[0])
being changed toifd[X_RESOLUTION] = dpi[0]
.While updating this, I also note that we round the dpi - that was added in #3709
Also removed in #1419 was the use of "inch", "cm" and "centimeter" for
resolution_unit
, so I'm fixing that as well.