pyyeti.nastran.n2p.mksetpv

pyyeti.nastran.n2p.mksetpv(uset, major, minor)[source]

Make a set partition vector from a Nastran USET table.

Parameters:

  • uset (pandas DataFrame) – A DataFrame as output by pyyeti.nastran.op2.OP2.rdn2cop2()

  • major (integer or string) – An integer bitmask or a set letter or letters (see below).

  • minor (integer or string) – An integer bitmask or a set letter or letters.

Returns:

pv (1d ndarray) – A True/False vector for partitioning minor from major. Length = number of DOF in major.

Notes

The inputs major and minor can be specified as a combination of sets by using the ‘+’ sign. See help in mkusetmask() for more information on how to specify the sets.

The sets (and supersets) currently accounted for are:

Sets              Supersets

 m  -------------------------------------\
 s  ------------------------------\       > g --\
 o  -----------------------\       > n --/       \
 q  ----------------\       > f --/       \       \
 r  ---------\       > a --/       \       \       > p
 c  --\       > t --/       \       > fe    > ne  /
 b  ---> l --/               > d   /       /     /
 e  ------------------------/-----/-------/-----/

User-defined sets: u1, u2, u3, u4, u5, and u6.

See also

mkdofpv(), pyyeti.nastran.op2.rdnas2cam(), formulvs(), usetprt(), rbgeom_uset(), mkusetmask(), pyyeti.nastran.op2.OP2.rdn2cop2()

Raises:

ValueError – When minor is not completely contained in major.

Examples

>>> import numpy as np
>>> from pyyeti import nastran
>>> # First, make a uset table
>>> #  node 100 in basic is @ [5, 10, 15]
>>> #  node 200 in cylindrical is @ [r, th, z] = [32, 90, 10]
>>> #  z_cyl = x-basic; r_cyl = y-basic
>>> #  Also, put 100 in b-set and 200 in m-set.
>>> cylcoord = np.array([[1, 2, 0], [0, 0, 0], [1, 0, 0],
...                     [0, 1, 0]])
>>> uset = nastran.addgrid(
...     None, [100, 200], ['b', 'm'], [0, cylcoord],
...     [[5, 10, 15], [32, 90, 10]], [0, cylcoord])
>>> bset = nastran.mksetpv(uset, 'p', 'b')        # 1:6 are true
>>> np.set_printoptions(linewidth=75)
>>> bset
array([ True,  True,  True,  True,  True,  True, False, False, False,
       False, False, False], dtype=bool)
>>> mset = nastran.mksetpv(uset, 'p', 'm')        # 7:12 are true
>>> mset
array([False, False, False, False, False, False,  True,  True,  True,
        True,  True,  True], dtype=bool)
>>> rcqset = nastran.mksetpv(uset, 'p', 'r+c+q')  # all false
>>> rcqset
array([False, False, False, False, False, False, False, False, False,
       False, False, False], dtype=bool)