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ecstat 处理分bin时报错 #26
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upgrade v1.2.0 |
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在画直方图之前进行ecStat.histogram(height,'scott')数据分箱。但是报错
数据如下:
var height = [200,70, 65, 63, 72, 81, 83, 66, 75, 80, 75, 79, 76, 76, 69, 75, 74, 85, 86, 71, 64, 78, 80, 74, 72, 77, 81, 82, 80, 80, 80, 87];
var bins = ecStat.histogram(height,'scott');
报错函数:
return function (start, stop, count) {
var step0 = Math.abs(stop - start) / count;
var precision = Math.floor(Math.log(step0) / Math.LN10);
var step1 = Math.pow(10, precision);
var error = step0 / step1;
if (error >= Math.sqrt(50)) {
step1 *= 10;
}
else if (error >= Math.sqrt(10)) {
step1 *= 5;
}
else if(error >= Math.sqrt(2)) {
step1 *= 2;
}
return +((stop >= start ? step1 : -step1).toFixed(-precision));
报错提示: toFix 函数输入值在0-1之间,而-precision为-1
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