op2_reader_helper¶
This is the pyNastran.op2_interface.op2_reader.rst file.
op2_reader Module¶
- Defines various tables that don’t fit in other sections:
OP2Reader - read_cmodeext(self) - read_cmodeext_helper(self) - read_aemonpt(self) - read_monitor(self) - read_r1tabrg(self, data, ndata) - read_hisadd(self)
- read_cstm(self)
- read_dit(self)
- read_extdb(self)
- read_fol(self)
- read_frl(self)
- read_gpl(self)
- read_ibulk(self)
- read_intmod(self)
- read_meff(self)
- read_omm2(self)
- read_sdf(self)
- read_tol(self)
- _skip_pcompts(self)
- _read_pcompts(self)
Matrix - _get_matrix_row_fmt_nterms_nfloats(self, nvalues, tout) - _skip_matrix_mat(self) - read_matrix(self, table_name) - _read_matpool_matrix(self) - _read_matrix_mat(self) - grids_comp_array_to_index(grids1, comps1, grids2, comps2,
make_matrix_symmetric)
Others - _get_marker_n(self, nmarkers) - read_markers(self) - _skip_subtables(self) - _skip_table_helper(self) - _print_month(self, month, day, year, zero, one) - read_results_table(self)
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class
pyNastran.op2.op2_interface.op2_reader.OP2Reader(op2)[source]¶ Stores methods that aren’t useful to an end user
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binary_debug¶ interface to the op2 object
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debug_file¶ interface to the op2 object
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get_marker1(self, rewind=True, macro_rewind=False)[source]¶ Gets 1 marker See get_n_markers(…)
Parameters: - rewind : bool
should the file be returned to the starting point
- macro_rewind : bool
???
Returns: - markers : int
a single marker
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get_nmarkers(self, n, rewind=True, macro_rewind=False)[source]¶ Gets n markers, so if n=2, it will get 2 markers.
Parameters: - n : int
number of markers to get
- rewind : bool
should the file be returned to the starting point
Returns: - markers : List[int]
list of [1, 2, 3, …] markers
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h5_file= None¶ the h5 file object used to reduce memory usage
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is_debug_file¶ interface to the op2 object
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is_valid_subcase(self)[source]¶ Lets the code check whether or not to read a subcase
Returns: - is_valid : bool
should this subcase defined by self.isubcase be read?
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load_as_h5= None¶ should an h5_file be created
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log¶ interface to the op2 object
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read_3_blocks(self)[source]¶ - Reads a block following a pattern of:
- [nbytes, data, nbytes] [nbytes, data, nbytes] [nbytes, data, nbytes]
This is intended to be used for reading marker triples
Returns: - data : bytes
the data in binary
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read_3_markers(self, markers, macro_rewind=True)[source]¶ Micro-optimizes
read_markersfor 3 markers.Parameters: - markers : List[int, int, int]
markers to get; markers = [-10, 1, 0]
Raises: - FortranMarkerError
if the expected table number is not found
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read_bgpdt(self)[source]¶ reads the BGPDT, BGPDTS, BGPDTOLD tables
tested by TestOP2Matrix.test_gpspc
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read_block(self)[source]¶ - Reads a block following a pattern of:
- [nbytes, data, nbytes]
Returns: - data : bytes
the data in binary
Notes
see read_3_blocks
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read_cstm(self)[source]¶ Reads the CSTM table, which defines the transform from global to basic.
Returns 14-column matrix 2-d array of the CSTM data:
[ [ id1 type xo yo zo T(1,1:3) T(2,1:3) T(3,1:3) ] [ id2 type xo yo zo T(1,1:3) T(2,1:3) T(3,1:3) ] ... ]
T is transformation from local to basic for the coordinate system.
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read_fol(self)[source]¶ Reads the FOL table Frequency response frequency output list
tested by TestOP2.test_monpnt3
Word Name Type Description 1 NAME(2) CHAR4 Data block name 3 FREQ RS Frequency Word 3 repeats until End of Record Word Name Type Description 1 WORD1 I Number of frequencies 2 WORD2 I Frequency set record number 3 WORD3 I Number of loads 4 UNDEF(3) None Not used
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read_frl(self)[source]¶ reads the FRL (Frequency Response List) table
tested by TestOP2.test_op2_good_sine_01
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read_ibulk(self)[source]¶ tested by TestOP2.test_ibulk
read_mode = 1 (array sizing) read_mode = 1 (reading)
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read_markers(self, markers, macro_rewind=True)[source]¶ Gets specified markers, where a marker has the form of [4, value, 4]. The “marker” corresponds to the value, so 3 markers takes up 9 integers. These are used to indicate position in the file as well as the number of bytes to read.
Because we’re checking the markers vs. what we expect, we just throw the data away.
Parameters: - markers : List[int]
markers to get; markers = [-10, 1]
Raises: - FortranMarkerError
if the expected table number is not found
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read_mode¶ interface to the op2 object
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read_r1tabrg(self, data, ndata)[source]¶ - Design Responses:
- Weight
- Flutter Speed
- Stress
- Strain
- Displacement
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show(self, n, types='ifs', endian=None)[source]¶ shows the next N bytes
Parameters: - n : int
the number of bytes to show
- types : str; default=’ifs’
the data types to show
- endian : str; default=None -> active endian
the data endian
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show_data(self, data, types='ifs', endian=None)[source]¶ Shows a data block as various types
Parameters: - data : bytes
the binary string bytes
- types : str; default=’ifs’
i - int f - float s - string d - double (float64; 8 bytes) q - long long (int64; 8 bytes)
l - long (int; 4 bytes) I - unsigned int (int; 4 bytes) L - unsigned long (int; 4 bytes) Q - unsigned long long (int; 8 bytes)
- endian : str; default=None -> auto determined somewhere else in the code
the big/little endian {>, <}
- .. warning:: ‘s’ is apparently not Python 3 friendly
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pyNastran.op2.op2_interface.op2_reader.eqexin_to_nid_dof_doftype(eqexin1, eqexin2)[source]¶ assemble dof table