Function toDegrees

test/specs/scale.radialLinear.tests.js:643–645

(radians)

      return y;
    };
    const toDegrees = function(radians) {
      return radians * (180 / PI);
    };

    for (var i = 0; i < 5; i++) {
      const extra = (i === 0 ? tickBackdropHeight / 2 : 0);