bdf/field_writer Package¶
This is the pyNastran.bdf.field_writer.rst file.
field_writer
Module¶
Defines legacy import functions
-
pyNastran.bdf.field_writer.
print_card
(fields, size=8, is_double=False)[source]¶ Prints a card in 8-character of 16-character Nastran format.
Parameters: - fields : List[int/float/str/None]
all the fields in the BDF card (no trailing Nones)
- size : int; default=8
the size of the field (8/16)
- is_double : bool; default=False
is the card double precision? Double precision applies to specific cards and turns 1.234E+5 into 1.234D+5. Applies to GRID, CORDx only?
Returns: - card : str
string representation of the card
Note
be careful of using is_double on cards that aren’t GRID or CORDx
field_writer_8
Module¶
Defines functions for single precision 8 character field writing.
-
pyNastran.bdf.field_writer_8.
is_same
(value1, value2)[source]¶ Checks to see if 2 values are the same
Note
this method is used by almost every card when printing
-
pyNastran.bdf.field_writer_8.
print_card_8
(fields)[source]¶ Prints a nastran-style card with 8-character width fields.
Parameters: - fields : List[int/float/str/None]
all the fields in the BDF card (no trailing Nones)
Returns: - card : str
string representation of the card in small field format
Note
An internal field value of None or ‘’ will be treated as a blank field
Note
A small field format follows the 8-8-8-8-8-8-8-8 = 80 format where the first 8 is the card name or blank (continuation). The last 8-character field indicates an optional continuation, but because it’s a left-justified unneccessary field, print_card doesnt use it.
-
pyNastran.bdf.field_writer_8.
print_field_8
(value)[source]¶ Prints a 8-character width field
Parameters: - value : int/float/str
the value to print
Returns: - field : str
an 8-character string
-
pyNastran.bdf.field_writer_8.
print_float_8
(value)[source]¶ Prints a float in nastran 8-character width syntax using the highest precision possbile.
-
pyNastran.bdf.field_writer_8.
print_int_card
(fields)[source]¶ Prints a nastran-style card with 8-character width fields. All fields (other than the first field) must be integers. This is used to speed up SET cards.
Parameters: - fields : List[int/float/str/None]
The list of fields to write to a nastran card.
- .. warning::
Blanks are not allowed! Floats and strings are not allowed.
- .. code-block:: python
fields = [‘SET’, 1, 2, 3, 4, 5, 6, …, n]
-
pyNastran.bdf.field_writer_8.
print_int_card_blocks
(fields_blocks)[source]¶ - Prints a nastran-style card with 8-character width fields. All fields other than the card name must be written in “block” format. This is used to speed up SET cards.
Parameters: - fields_blocks : List[int]
The fields written in “block” notation.
Returns: - msg : str
the field blocks as a 8-character width Nastran card
Note
Blanks are allowed in the False block.
fields_blocks = [ 'SET1', [['a', 1.0, 3], False], # these are not all integers [[1, 2, 3], True], # these are all integers ] msg = print_int_card_blocks(fields_blocks) print(msg) >>> 'SET1 a 1. 3 1 2 3
- ‘
-
pyNastran.bdf.field_writer_8.
print_scientific_8
(value)[source]¶ Prints a value in 8-character scientific notation. This is a sub-method and shouldnt typically be called
Notes
print_float_8 : a better float printing method
-
pyNastran.bdf.field_writer_8.
set_blank_if_default
(value, default)[source]¶ Used when setting the output data of a card to clear default values
Parameters: - value : int/float/str
the field value the may be set to None (blank) if value=default, the default value for the field
- default : int/float/str
the default value
- .. note:: this method is used by almost every card when printing
field_writer_16
Module¶
Defines functions for single precision 16 character field writing.
-
pyNastran.bdf.field_writer_16.
print_card_16
(fields, wipe_fields=True)[source]¶ Prints a nastran-style card with 16-character width fields.
Parameters: - fields : List[varies]
all the fields in the BDF card (no trailing Nones)
- wipe_fields : bool; default=True
some cards (e.g. PBEAM) have ending fields that need to be there, others cannot have them.
Returns: - card : str
string representation of the card in small field format
Note
An internal field value of None or ‘’ will be treated as a blank field
Note
A large field format follows the 8-16-16-16-16-8 = 80 format where the first 8 is the card name or blank (continuation). The last 8-character field indicates an optional continuation, but because it’s a left-justified unneccessary field, print_card doesnt use it.
-
pyNastran.bdf.field_writer_16.
print_field_16
(value)[source]¶ Prints a 16-character width field
Parameters: - value : int / float / str / None
the value to print
Returns: - field : str
an 16-character string
-
pyNastran.bdf.field_writer_16.
print_float_16
(value)[source]¶ Prints a float in nastran 16-character width syntax using the highest precision possbile. .. seealso:: print_float_8
field_writer_double
Module¶
Defines functions for double precision 16 character field writing.
-
pyNastran.bdf.field_writer_double.
print_card_double
(fields, wipe_fields=True)[source]¶ Prints a nastran-style card with 16-character width fields.
Parameters: - fields : List[varies]
all the fields in the BDF card (no trailing Nones)
- wipe_fields : bool; default=True
some cards (e.g. PBEAM) have ending fields that need to be there, others cannot have them.
Returns: - card : str
string representation of the card in small field format
Note
An internal field value of None or ‘’ will be treated as a blank field
Note
A large field format follows the 8-16-16-16-16-8 = 80 format where the first 8 is the card name or blank (continuation). The last 8-character field indicates an optional continuation, but because it’s a left-justified unneccessary field, print_card doesnt use it.