ValueOfFunctionAtPointOnGrid

Evaluate a Chebyshev series at arbitrary points in its physical domain.

Developer documentation: this item describes internal implementation details.

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Declaration

 value = ValueOfFunctionAtPointOnGrid(x0,x,func_cheb)

Parameters

• x0 evaluation points
• x Lobatto grid defining the physical domain
• func_cheb Chebyshev coefficients

Returns

• value series evaluated at x0

Discussion

            We have the Chebyshev coefficents of function func_cheb, defined on grid x, return the value at x0;