v0.7.1

Release notes

• much improved Python 3 support
• added large field BDF writing
• more OP2/F06 results (e.g. mass properties)
• OP2 reader is faster, more robust, and catches FatalErrors
• improved GUI to supports Cart3d, Panair, and Usm3D and log messages
• making bdf/f06/op2 APIs more consistent

BDF

• added MAT11, ACCEL1, CAERO3/PAERO3, DMI, TABLED4/TABDMP1,
  BCTPARA, BCRPARA, BCTADD, BCTSET, BSURF, BSURFS
• MATS1, MATTx, TABLED4, TABDMP1, CAERO3, PAERO3 supported
• fixed major PBEAM bug
• fixed bugs in PBUSHT, PDAMPT, PELST, TABRND1, PTUBE, EIGC
• imporved SET/SPOINT writing
• improved messages when cross-referencing
• readBDF is now gone, replaced by read_bdf (was previously deprecated)
• large field & double precision format writing now supported
  write_bdf method now has a is_double=True/False option
• fixed bug with SETx writing. Nastran limits a SETx card to one THRU
  per card, which is inconsistent with other cards that use THRU.
• fixed GRID Position bug when using referenced cylindrical/spherical
  coordinate systems
• fixed CONM2 offset bug for coordinate systems
• added CAERO1/2 sub-element access methods for use in GUI
• additional xref options
• improved error handling

OP2

• rewrite of the OP2 allows for increased robustness and speed
• Most fatal errors caught
  • BDF input errors not caught
• added grid point weight table (see beam_modes demo)
• OP2 no longer defines the filename; use read_op2.
  readOP2 is now gone, replaced by read_op2 (was previously deprecated)
• renamed OP2 class names to be more descriptive
  (e.g. DisplacementObject -> RealDisplacement)
• OP2 vectorized support. It's slower, but it takes up much less
  memory (~5x). Note: the F06 writing cannot be vectorized, so if
  you do vectorize your code, it may be much faster. The API and data
  members are still in development and should be expected to change.
• superelement support

F06

• removed; use the OP2

GUI

• added much improved qt GUI
  • results sidebar
  • controllable legend
  • vectorized support for reduced memory usage
  • color coded logging
  • scripting capability
• removed wx GUI

Converters / Additional GUI Options

• pyNastran's code base makes it easy to develop other useful tools
  that make use of common code. As such, additional formats are supported
  in terms of readers/writers/converters/viewing, but are not a main focus.
  These include:
  • Cart3d
  • Panair
  • STL
  • Usm3D