std::pair< Real, Real > _proxy_value
Extreme value of the value and proxy variable at the same point.
virtual std::pair< Real, Real > getProxyValuePair() override
A postprocessor for collecting the elemental min or max value.
virtual void computeQpValue() override
This is what derived classes should override to do something on every quadrature point on every eleme...
const VariableValue & _proxy_variable
A proxy variable used to find the quadrature point at which to evaluate the variable.
static InputParameters validParams()
ElementExtremeValue(const InputParameters ¶meters)