function getStepSize(range, steps) {

  var minLinearRange = log10(range.min),
      maxLinearRange = log10(range.max);

  var absoluteLinearRange = Math.abs(minLinearRange) + Math.abs(maxLinearRange);

  return absoluteLinearRange / steps;
}
Get step size for given range and number of steps.

@param {Object} range
@param {number} range.min
@param {number} range.max
@param {number} steps