Globals

Particle Types

Particle types are defined as single bytes in the oap library. They can be used to classify optical-arrays. The following particle types are already defined:

UNDEFINED = b'u'    # Not yet classified
INDEFINABLE = b'i'  # Not possible to classify
ERRONEOUS = b'e'    # Artefacts or erroneous images
SPHERE = b's'       # Spherical particles
COLUMN = b'c'       # Column-like particles
ROSETTE = b'r'      # Rosettes
DENDRITE = b'd'     # Dendrites
PLATE = b'p'        # Plates

Example:

>>> import oap
>>> oap.COLUMN
b'c'
>>> array, p_type = oap.read_oap_file("example01.oap")
>>> oap.print_array(array)
      1 1 1 2 2 1
    1 2 3 2 3 3 2 2 2 2 3 2 2 1 1
    1 2 3 3 3 3 2 2 2 2 3 2 2 2 2 1 1 2 1 1 1
    2 3 3 3 3 3 2 3 3 2 3 3 3 3 3 2 2 3 2 2 2 2 2 2 2   1
    2 3 3 3 3 3 2 3 3 3 3 3 3 3 3 3 2 3 2 3 3 2 2 2 3 1 1
      1 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 2 2 2
          2 2 1 2 2 2 3 3 2 3 3 3 3 3 3 3 3 3 3 3 2 3 3 2
                      1 1   1 2 2 3 2 3 3 3 3 3 3 2 3 3 2
                            1 1 2 1 2 2 3 3 3 3 3 2 3 2 1
                                              1 1 1 1
>>> p_type == oap.COLUMN
True

If the given particle types are not sufficient, you can use unused bytes to define your own types. For example:

>>> oap.array_as_oap_file(array, "example02", p_type=b'x')
>>> array, p_type = oap.oap.read_oap_file("example02.oap")
>>> p_type
b'x'