DADiSP Worksheet Functions > Function Categories > Query Functions > DELTAY
Returns the delta y increment of a table.
DELTAY(series)
series |
- |
Optional. A series or table. Defaults to the current Window. |
A scalar.
W1: randn(10)
W2: spline2(W1, 4)
deltay(W1) == 1
deltay(W2) == 0.25
W1 contains a 10x10 array of normally distributed random values. W2 performs a 4x cubic spline interpolation. Because the interpolation preserves the extent of the original data, both the delta X and delta Y of the result are adjusted.
DELTAY returns 1.0 for a standard series.
See SETDELTAY to set the delta Y value.