extract a scalar data element from a field's vector component
func DVextr_scalar {
Node_Data+Iparam &in { /* input field */
nnodes+req;
};
int+Iparam component; /* which component to extract */
Node_Data+Oparam out; /* output field */
method+notify_val+notify_inst upd_extr_scalar = "extr_scalar";
} ;
DVextr_ scalar extracts a single scalar data element from a vector component of a field with Node_Data.
([a, b, c]) --> select second vector element --> (b)
A reference to a field with Node_Data. The Node_Data can contain only one component. (See DVextract_comp to obtain a single component.) This component can be scalar or vector.
An integer. Establishes which sub-component of the component to extract.
A new Node_Data object that contains only the extracted scalar data.
DVMextract_scalar_param, ExtractScalar