Time Series Analysis > Building Workbook > Creating and Setting Up Calculated Series > Setting Up Calculation Method Parameters > Transformations > Mathematical > Rate of Change
Tool interfaces in the web application and in the desktop application are identical, and differences in functionality are given in appropiate commments.
The method calculates the rate of change in percents of the series values to the values of the selected period (X[t]/X[t-N]-1)*100:
pch PoP. Previous period.
pch YoY. Corresponding period of the previous year.
pch YTD. End of the previous year.
It is included in the group of functions that perform transformations on series.
After the method is applied, in the workbook, based on each selected series a calculated series with a name of the pch<Period>(<Series_Name>[t])(<Series_Name>) type is created, containing the calculation results. For example:
See also:
Working with Calculated Series | Modeling Container: Transformations on Variables or Factors | IModelling.Pch | IModelling.Pcha | IModelling.Pchx | IModelling.Pchy
To apply the method
Transformations button on the Calculations ribbon tab.