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.. _get_extended_data:
Get Extended Data from DXF Entities
===================================
HEADER Variables
----------------
.. code-block:: Python
i1 = doc.header["$USERI1"] # integer
r1 = doc.header["$USERR1"] # float
XDATA Section
-------------
The structure of XDATA is arbitrary and only some structures used by AutoCAD are
documented in the DXF reference. Use the :ref:`browse_command` command to explore these
structures directly in DXF files.
.. code-block:: Python
my_app_id = "MY_APP_1"
if line.has_xdata(my_app_id):
tags = line.get_xdata(my_app_id)
print(f"{str(line)} has {len(tags)} tags of XDATA for AppID {my_app_id!r}")
for tag in tags:
print(tag)
- :meth:`ezdxf.entities.DXFEntity.get_xdata`
Extension Dictionaries
----------------------
Like XDATA the structure of extension dictionaries is arbitrary and not documented by
the DXF reference.
.. code-block:: Python
for line in msp.query("LINE"):
if line.has_extension_dict:
# get the extension dictionary
xdict = line.get_extension_dict()
- :meth:`ezdxf.entities.DXFEntity.get_extension_dict`
.. seealso::
**Tasks:**
- :ref:`add_custom_data`
- :ref:`modify_extended_data`
- :ref:`delete_extended_data`
**Tutorials:**
- :ref:`tut_custom_data`
**Basics:**
- :ref:`xdata_internals`
- :ref:`extension_dictionary`
- :ref:`dxf_tags_internals`
**Classes:**
- :class:`ezdxf.entities.xdata.XData`
- :class:`ezdxf.entities.xdict.ExtensionDict`
- :class:`ezdxf.entities.XRecord`
- :class:`ezdxf.entities.Dictionary`
- :class:`ezdxf.entities.DictionaryVar`
**Helper-Classes:**
- :class:`ezdxf.entities.xdata.XDataUserList`
- :class:`ezdxf.entities.xdata.XDataUserDict`
- :class:`ezdxf.urecord.UserRecord`
- :class:`ezdxf.urecord.BinaryRecord`
|
