Adams Basic Package > Adams View > View Function Builder > Design-Time Functions > Functions: T - Z > VALAT

VALAT

Returns a value from the Y_array at the same position as X_value was found in the X_array. X_array and Y_array must be the same length.  

Note:  
This function expects the values in X_array to be sorted in ascending order.

Format

VALAT(X_array, Y_array, X_value)

Arguments

 
X_array
An array of at least two real values that determine the range of the curve. Values must be in ascending order.
Y_array
An array containing the same number of real values as the X_array. Used to define the domain of the curve.
X_value
A value which "indexes" into the X_array.

Examples

model create model=mod1
variable create variable=x_array  rea=-1,0,2,3
variable create variable=y_array  rea= 1,2,3,4
variable create variable=xx  rea=0.0
variable create variable=yy  rea=(VALAT(x_array, y_array, xx))
VALAT produces values as follows:
 
xx
-2, -1, 0, 1, 2, 3, 4
yy
0, 1, 2, 2.5, 3, 4, 5
Learn more about matrix/array functions.