ostk.astrodynamics.dynamics.PositionDerivative

class PositionDerivative(self: ostk.astrodynamics.dynamics.PositionDerivative)

Bases: Dynamics

The position derivative model.

Constructor.

Methods

compute_contribution	Compute the contribution of the position derivative to the state vector.
from_environment	Create a list of Dynamics objects from an environment.
get_name	Get the name of the dynamics.
get_read_coordinate_subsets	Get the coordinate subsets that the dynamics reads.
get_write_coordinate_subsets	Get the coordinate subsets that the dynamics writes.
is_defined	Check if the position derivative is defined.

compute_contribution(

self: ostk.astrodynamics.dynamics.PositionDerivative,

instant: ostk.physics.time.Instant,

x: numpy.ndarray[numpy.float64[m, 1]],

frame: ostk.physics.coordinate.Frame,

) → numpy.ndarray[numpy.float64[m, 1]]

Compute the contribution of the position derivative to the state vector.

Parameters:

• instant (Instant) -- The instant of the state vector.

• x (numpy.ndarray) -- The state vector.

• frame (Frame) -- The reference frame.

Returns:

The contribution of the position derivative to the state vector.

Return type:

numpy.ndarray

static from_environment(

environment: ostk.physics.Environment,

) → list[ostk.astrodynamics.Dynamics]

Create a list of Dynamics objects from an environment.

Parameters:

environment (Environment) -- The environment to create the dynamics from.

Returns:

The list of Dynamics objects created from the environment.

Return type:

dynamics (list[Dynamics])

get_name(self: ostk.astrodynamics.Dynamics) → ostk.core.type.String

Get the name of the dynamics.

Returns:

The name of the dynamics.

Return type:

name (str)

get_read_coordinate_subsets(

self: ostk.astrodynamics.Dynamics,

) → list[ostk.astrodynamics.trajectory.state.CoordinateSubset]

Get the coordinate subsets that the dynamics reads.

Returns:

The coordinate subsets that the dynamics reads.

Return type:

read_coordinate_subsets (Array<CoordinateSubset>)

get_write_coordinate_subsets(

self: ostk.astrodynamics.Dynamics,

) → list[ostk.astrodynamics.trajectory.state.CoordinateSubset]

Get the coordinate subsets that the dynamics writes.

Returns:

The coordinate subsets that the dynamics writes.

Return type:

write_coordinate_subsets (Array<CoordinateSubset>)

is_defined(

self: ostk.astrodynamics.dynamics.PositionDerivative,

) → bool

Check if the position derivative is defined.

Returns:

True if the position derivative is defined, False otherwise.

Return type:

bool