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Syntax
SPLINE arg1 arg2
Description
The interpolation is done by a cubic spline. Its boundary conditions are given by the function values and derivatives at the beginning and at the end.
Arguments
Minimum quantity: 2
arg1
Value |
Dimension |
Meaning |
x |
DOUBLE |
Abscissa value. A table describes a functional relation. The abscissa values are to be given in ascending order. |
xexpr |
TEXT |
Abscissa value as mathematical expression |
arg2
Value |
Dimension |
Meaning |
y |
DOUBLE |
Ordinate value. A table describes a functional relation. |
yexpr |
TEXT |
Ordinate value as mathematical expression |
Scopes
CALC/CURVE
Examples
SPLINE "0" "0"
SPLINE "4" "5"
SPLINE "10" "-1"
SPLINE "12" "0"
Three cubic spline functions are defined.
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