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Octagar temperament is the 7-limit planar temperament tempering out 4000/3969. While most 7-limit planar temperaments exhibit a tendency towards tuning flat, many people seem to prefer a slight sharp tendency instead. Octagar provides this; for instance the 7 odd limit minimax tuning has fifths and 7s 2.245 cents sharp, with just major thirds.

Vital statistics

Comma c = 4000/3969

7-limit minimax: 3 and 7 1/6c sharp, 5 just
[|1 0 0 0>, |5/6 1/3 1/2 -1/3>,
|0 0 1 0>, |5/6 -2/3 1/2 2/3>]
Eigenmonzos: 2, 7/6, 5/4

9-limit minimax: 3 1/8c sharp, 5 just, 7 1/4c sharp
[|1 0 0 0>, |5/8 1/2 3/8 -1/4>,
|0 0 1 0>, |5/4 -1 3/4 1/2>]
Eigenmonzos: 2, 5/4, 9/7

Lattice basis: 63/50 length 0.8966, 21/20 length 1.0605
Angle(63/50, 21/20) = 97.743 cents
Map to lattice: [<0 -1 -2 -1|, <0 -1 0 2|]
EDOs: 12, 26, 27, 41, 53, 94, 121, 162, 189, 215, 230
Badness: 0.000216

Projection pairs: 5 3969/800 7 27783/4000 to 2.3.7/5

Hobbit bases

{2, 3, 7/5} subgroup

12: 50/49, 256000/250047
15: 256000/250047, 1029/1000
23: 12800000/12252303, 107163/102400

Nakika

Commas: 100/99, 245/242
Associated linear temperament: octacot
Lattice basis: 11/7 0.798 22/21 0.906
Angle(11/7, 22/21) = 97.747 degrees
Map to lattice: [<0 1 2 1 2|, <0 -1 0 2 2|]

Map: [<1 0 1 4 4|, <0 1 0 -2 -2|, <0 0 2 3 4|]
EDOs: 12, 15, 26, 29, 41
Badness: 0.000539

Projection pairs: 5 242/49 7 21296/3087 11 234256/21609 to 2.3.11/7

Scales: nakika12