DLogX(Input: ITimeSeries,Lag: Integer)
Input. Variable
Lag. The parameter sets a shift (lag) of variable points in a time period. It can take only positive values. Optional parameter. By default the parameter is 1 - previous period.
It calculates the rate of change of the logarithm of variable points to the specified period: (ln(x[t]/x[t-Lag])).
| Formula | Result | Application |
| = DLogX({Brazil|BCA}, 2) | The rate of change of Brazil|BCA factor observations of logarithm is calculated to the period that is shifted from current by two points back. | It can be used in formulas of calculated series of time series database and model formulas of modeling container that is a child of the time series database. |
| = DLogX(X1, 3) | The rate of change of X1 factor points of logarithm is calculated to the period that is shifted from current by three points back. |
It can be used in model formulas of modeling container. |
See also:
Functions Available in Expression Editor │ Transformations │ IModelling.DLogX