All Superinterfaces:

java.io.Externalizable, java.io.Serializable
```
@Deprecated
public interface StepInterpolatorWithJacobians
extends java.io.Externalizable
```
Deprecated.
as of 2.2 the complete package is deprecated, it will be replaced in 3.0 by a completely rewritten implementation

This interface represents an interpolator over the last step during an ODE integration.
The various ODE integrators provide objects implementing this interface to the step handlers. These objects are often custom objects tightly bound to the integrator internal algorithms. The handlers can use these objects to retrieve the state vector at intermediate times between the previous and the current grid points (this feature is often called dense output).

One important thing to note is that the step handlers may be so tightly bound to the integrators that they often share some internal state arrays. This imply that one should never use a direct reference to a step interpolator outside of the step handler, either for future use or for use in another thread. If such a need arise, the step interpolator must be copied using the dedicated copy() method.

Since:

2.1

See Also:

FirstOrderIntegratorWithJacobians, StepHandlerWithJacobians

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`StepInterpolatorWithJacobians`	`copy()`	Deprecated. Copy the instance.
`double`	`getCurrentTime()`	Deprecated. Get the current grid point time.
`double[][]`	`getInterpolatedDyDp()`	Deprecated. Get the partial derivatives of the state vector with respect to the ODE parameters of the interpolated point.
`double[][]`	`getInterpolatedDyDpDot()`	Deprecated. Get the time derivatives of the jacobian of the state vector with respect to the ODE parameters of the interpolated point.
`double[][]`	`getInterpolatedDyDy0()`	Deprecated. Get the partial derivatives of the state vector with respect to the initial state of the interpolated point.
`double[][]`	`getInterpolatedDyDy0Dot()`	Deprecated. Get the time derivatives of the jacobian of the state vector with respect to the initial state of the interpolated point.
`double`	`getInterpolatedTime()`	Deprecated. Get the time of the interpolated point.
`double[]`	`getInterpolatedY()`	Deprecated. Get the state vector of the interpolated point.
`double[]`	`getInterpolatedYDot()`	Deprecated. Get the time derivatives of the state vector of the interpolated point.
`double`	`getPreviousTime()`	Deprecated. Get the previous grid point time.
`boolean`	`isForward()`	Deprecated. Check if the natural integration direction is forward.
`void`	`setInterpolatedTime(double time)`	Deprecated. Set the time of the interpolated point.

Methods inherited from interface java.io.Externalizable
readExternal, writeExternal

- Method Detail
  - getPreviousTime
```
double getPreviousTime()
```
    Deprecated.
    
    Get the previous grid point time.
    
    Returns:
    
    previous grid point time
  - getCurrentTime
```
double getCurrentTime()
```
    Deprecated.
    
    Get the current grid point time.
    
    Returns:
    
    current grid point time
  - getInterpolatedTime
```
double getInterpolatedTime()
```
    Deprecated.
    
    Get the time of the interpolated point. If setInterpolatedTime(double) has not been called, it returns the current grid point time.
    
    Returns:
    
    interpolation point time
  - setInterpolatedTime
```
void setInterpolatedTime(double time)
```
    Deprecated.
    
    Set the time of the interpolated point.
    Setting the time outside of the current step is now allowed, but should be used with care since the accuracy of the interpolator will probably be very poor far from this step. This allowance has been added to simplify implementation of search algorithms near the step endpoints.
    
    Setting the time changes the instance internal state. If a specific state must be preserved, a copy of the instance must be created using copy().
    
    Parameters:
    
    time - time of the interpolated point
  - getInterpolatedY
```
double[] getInterpolatedY()
                   throws DerivativeException
```
    Deprecated.
    
    Get the state vector of the interpolated point.
    The returned vector is a reference to a reused array, so it should not be modified and it should be copied if it needs to be preserved across several calls.
    
    Returns:
    
    state vector at time getInterpolatedTime()
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    getInterpolatedYDot()
  - getInterpolatedDyDy0
```
double[][] getInterpolatedDyDy0()
                         throws DerivativeException
```
    Deprecated.
    
    Get the partial derivatives of the state vector with respect to the initial state of the interpolated point.
    The returned vector is a reference to a reused array, so it should not be modified and it should be copied if it needs to be preserved across several calls.
    
    Returns:
    
    partial derivatives of the state vector with respect to the initial state at time getInterpolatedTime()
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    getInterpolatedY()
  - getInterpolatedDyDp
```
double[][] getInterpolatedDyDp()
                        throws DerivativeException
```
    Deprecated.
    
    Get the partial derivatives of the state vector with respect to the ODE parameters of the interpolated point.
    The returned vector is a reference to a reused array, so it should not be modified and it should be copied if it needs to be preserved across several calls.
    
    Returns:
    
    partial derivatives of the state vector with respect to the ODE parameters at time getInterpolatedTime()
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    getInterpolatedY()
  - getInterpolatedYDot
```
double[] getInterpolatedYDot()
                      throws DerivativeException
```
    Deprecated.
    
    Get the time derivatives of the state vector of the interpolated point.
    The returned vector is a reference to a reused array, so it should not be modified and it should be copied if it needs to be preserved across several calls.
    
    Returns:
    
    derivatives of the state vector at time getInterpolatedTime()
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    getInterpolatedY()
  - getInterpolatedDyDy0Dot
```
double[][] getInterpolatedDyDy0Dot()
                            throws DerivativeException
```
    Deprecated.
    
    Get the time derivatives of the jacobian of the state vector with respect to the initial state of the interpolated point.
    The returned vector is a reference to a reused array, so it should not be modified and it should be copied if it needs to be preserved across several calls.
    
    Returns:
    
    time derivatives of the jacobian of the state vector with respect to the initial state at time getInterpolatedTime()
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    getInterpolatedY()
  - getInterpolatedDyDpDot
```
double[][] getInterpolatedDyDpDot()
                           throws DerivativeException
```
    Deprecated.
    
    Get the time derivatives of the jacobian of the state vector with respect to the ODE parameters of the interpolated point.
    The returned vector is a reference to a reused array, so it should not be modified and it should be copied if it needs to be preserved across several calls.
    
    Returns:
    
    time derivatives of the jacobian of the state vector with respect to the ODE parameters at time getInterpolatedTime()
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    getInterpolatedY()
  - isForward
```
boolean isForward()
```
    Deprecated.
    
    Check if the natural integration direction is forward.
    This method provides the integration direction as specified by the integrator itself, it avoid some nasty problems in degenerated cases like null steps due to cancellation at step initialization, step control or discrete events triggering.
    
    Returns:
    
    true if the integration variable (time) increases during integration
  - copy
```
StepInterpolatorWithJacobians copy()
                            throws DerivativeException
```
    Deprecated.
    
    Copy the instance.
    The copied instance is guaranteed to be independent from the original one. Both can be used with different settings for interpolated time without any side effect.
    
    Returns:
    
    a deep copy of the instance, which can be used independently.
    
    Throws:
    
    DerivativeException - if this call induces an automatic step finalization that throws one
    
    See Also:
    
    setInterpolatedTime(double)

Interface StepInterpolatorWithJacobians

Method Summary

Methods inherited from interface java.io.Externalizable

Method Detail

getPreviousTime

getCurrentTime

getInterpolatedTime

setInterpolatedTime

getInterpolatedY

getInterpolatedDyDy0

getInterpolatedDyDp

getInterpolatedYDot

getInterpolatedDyDy0Dot

getInterpolatedDyDpDot

isForward

copy