坐标轴数值动态计算方法

找了好久才找到得，感谢大佬得分享

function getOptInterval(intv){
	if (intv > 5){
		return intv;
	} else if (intv>2){
		return intv * 2;
	} else {
		return 10;
	}
}

function generateAxis(start, end){
	let dif = end - start;
	let mag = Math.round(Math.log10(dif));
	let n = parseInt(dif / (10**mag)) +1;
	let n1 = getOptInterval(n);
	
	let l = n * (10**mag) / n1;
	let optStart = parseInt(parseInt(start)/l) * l;
	if (optStart < start){
		optStart += l;
	}

	let result = [];
	for (int i = 0; i <= n1; i++){
		result.push(optStart + i * l);
	}
	return result;
}

源地址：

https://blog.csdn.net/ZxqSoftWare/article/details/106801756