Stats Packages

统计某个文件夹中文件的个数及行数

Resolve symlinks and expose the `stat` property on a file object.

Transform stream which returns the total number of streamed data.

Reduce transform stream which calculates the covariance of streamed numeric data.

Transform stream factory to round streamed numeric data values toward positive infinity (ceil).

Transform stream factory to calculate arithmetic means for streamed data arrays (chunks).

Transform stream factory to round streamed numeric data values.

Transform stream which returns the maximum value from a stream of numeric data.

Reduce transform stream which calculates the mean of streamed data.

Reduce transform stream which calculates the median of streamed data.

Transform stream which returns the minimum value from a stream of numeric data.

Transform stream factory to find sliding-window maximum values (moving max) over a numeric data stream.

Transform stream which calculates a sliding-window average (moving-mean) over a numeric data stream.

Transform stream which calculates a sliding-window sum (moving-sum) over a numeric data stream.

Transform stream factory to perform scalar multiplication on streamed numeric data values.

Transform stream factory to exponentiate numeric data stream values according a specified power.

Reduce transform stream which calculates quantiles over streamed data.

Reduce transform stream which calculates the Pearson product-moment correlation coefficient matrix of streamed numeric data.

Transform stream factory to find sliding-window minimum values (moving min) over a numeric data stream.

Reduce transform stream which calculates the variance of streamed data.