### HT_DCPERIOD - Hilbert Transform - Dominant Cycle Period > 函数名：HT_DCPERIOD 名称： 希尔伯特变换-主导周期 简介：将价格作为信息信号，计算价格处在的周期的位置，作为择时的依据。 [文库文档](https://wenku.baidu.com/view/0e35f6eead51f01dc281f18e.md) NOTE: The ``HT_DCPERIOD`` function has an unstable period. ```python real = HT_DCPERIOD(close) ``` Learn more about the Hilbert Transform - Dominant Cycle Period at [tadoc.org](http://www.tadoc.org/indicator/HT_DCPERIOD.htm).