Function tickIncrement

docs/app/js/sanddance-app.js:110656–110659

(start, stop, count)

    return ticks;
};
function tickIncrement(start, stop, count) {
    var step = (stop - start) / Math.max(0, count), power = Math.floor(Math.log(step) / Math.LN10), error = step / Math.pow(10, power);
    return power >= 0 ? (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1) * Math.pow(10, power) : -Math.pow(10, -power) / (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1);
}
function tickStep(start, stop, count) {
    var step0 = Math.abs(stop - start) / Math.max(0, count), step1 = Math.pow(10, Math.floor(Math.log(step0) / Math.LN10)), error = step0 / step1;
    if (error >= e10) step1 *= 10;