Computes a prewhitened linear trend on a vector of data. The zyp package allows you to use either Zhang's method, or the Yue Pilon method of computing nonlinear prewhitened trends.
Computes prewhitened nonlinear trends on CSV files or data frames with 0 to n columns of metadata, with 1 row per location and each column containing data for a particular time (day, month, year). The zyp package allows you to use either Zhang's method, or the Yue Pilon method of computing nonlinear prewhitened trends.
This function includes two approaches to analyze for trend, the Zhang method and Yue and Pilon method. These differ in their approach to pre-whitening to removing lag-1 autocorrelation. The magnitude of the trend is computed using the Theil-Sen approach (TSA).
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