LoadPart.select

pyPLUTO.LoadPart.select(self, var: ndarray, cond: str | Callable, sort: bool = False, ascending: bool = True) → ndarray

Selects or sorts the indices that satisfy a given condition for the particles. The condition is given by a string or a callable function.

Parameters:

- ascending: bool, default True

If True, the indices are sorted in ascending order.

- cond (not optional): str | Callable

The condition to be satisfied.

- sort: bool, default False

If True, the indices are sorted in descending (or ascending) order.

- var (not optional): np.ndarray

The chosen variable for the selection.

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Returns:

• indx: np.ndarray

Examples

• Example #1: Select the indices that satisfy a condition

  >>> import pyPLUTO as pp
  >>> D = pp.LoadPart(0)
  >>> indx = pp.select(D.vx1, "vx1 > 0.0")
  >>> print(indx)
  

• Example #2: Sort the indices that satisfy a condition through a callable

  >>> import pyPLUTO as pp
  >>> D = pp.LoadPart(0)
  >>> indx = pp.select(D.vx1, lambda v: v > 0 sort = True)
  >>> print(indx)
  

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