Basic Examples (1)
The remaining question is to find the correct values at the midside nodes from the given (linear) point set f. If such values can be found then a second-order interpolation is possible. Currently no such algorithm is implemented.
If more information about the dataset is available and values for the midside nodes can be generated, a second-order interpolation can be constructed in the following manner. To generate a set of values for the second-order mesh, a function is evaluated at the second-order mesh coordinates: