Gradient (Unstructured) (UnstructuredGradient)
Estimate the gradient for each point or cell in any type of dataset.
The Gradient (Unstructured) filter estimates the gradient vector at each point or cell. It operates on any type of vtkDataSet, and the output is the same type as the input. If the dataset is a vtkImageData, use the Gradient filter instead; it will be more efficient for this type of dataset.

PropertyDescriptionDefault Value(s)Restrictions
Input
(Input)
This property specifies the input to the Gradient (Unstructured) filter.  

The selected object must be the result of the following: sources (includes readers), filters.

The dataset must contain a point or cell array with 1 components.

The selected dataset must be one of the following types (or a subclass of one of them): vtkPointSet.

 
Result Array Name
(ResultArrayName)
This property provides a name for the output array containing the gradient vectors. Gradients  
Scalar Array
(SelectInputScalars)
This property lists the name of the scalar array from which to compute the gradient.  

An array of scalars is required.

Valud array names will be chosen from point and cell data.