How to get DImensions Text.

[t.ogawa]

Dear Manfred.

I want to get dimensions text.

The following URL wrotes "Dimension Support". How can I get it?

https://groups.google.com/forum/#!searchin/python-ezdxf/dimension%7Csort:date/python-ezdxf/WA7J0wI9FGU/BEk5VfF6GAAJ.

now use:

 Python 3.7

 ezdxf 0.9 (use pip install https://pypi.org/project/ezdxf/)

thank you.

[Manfred Moitzi]

Dimension.dxf.text

Dimension text explicitly entered by the user

• If "" or "<>", the dimension measurement is drawn as the text,
• if “ “ (one blank space), the text is suppressed.
• Anything else is drawn as the text.

Therefore you don't get the dimension measurement by Dimension.dxf.text.

[t.ogawa]

Hi Manfred.

Thank you for reply.

Sorry for the small amount of information.

I want to get dimension text in dxf file.

[sample.dxf]

.
.
.
AcDbEntity
  8
FORMAT
100
AcDbMText
 10
73.6378494935
 20
113.6626139923
 30
0.2
 40
3.0
 41
0.0
 71
     1
 72
     1
  1
10x10-100x100SampleText 　 ← I want to get this text.
  7
SLDTEXTSTYLE1
 73
     1
 44
1.0
  0
ENDBLK
  5
196
330
194
100
AcDbEntity
  8
0
100
AcDbBlockEnd
.
.
.

↓ I'm using this code.

for entity in dxf.entities:
    e = {}
    e["type"] = entity.dxftype()
    if e["type"] == "TEXT":
        e["insert"] = entity.dxf.insert
        e["text"] = entity.dxf.text
    elif e["type"] == "MTEXT":
        e["insert"] = entity.dxf.insert
        e["raw_text"] = entity.get_text()

But I coudn't get dimension text.

How can i get dimension text in dxf file?

thank you.

2019年5月9日木曜日 16時27分09秒 UTC+9 Manfred Moitzi:

[Manfred Moitzi]

This excerpt seem to be part of the anonymous dimension block, which you don't need if you are really examine DIMENSION entities:

Print all DIMENSION text values, just searching the model space:

import ezdxf

doc = ezdxf.readfile('your_file.dxf')
msp = doc.modelspace()
for dimension in msp.query('DIMENSION'):
    print("{} text: {}".format(str(dimension), dimension.dxf.text)

[t.ogawa]

Thank you for reply.

I tried it.but I got an error.

Use code:

msp = dxf.modelspace()


for dimension in msp.query('DIMENSION'):

 
    print("{} text: {}",format(str(dimension), dimension.dxf.text))

Result:

- - - - - - - - - -

Traceback (most recent call last):

  File "/usr/local/lib/python3.7/site-packages/ezdxf/lldxf/attributes.py", line 117, in get_attrib

    return self._get_dxf_attrib(entity.tags)

  File "/usr/local/lib/python3.7/site-packages/ezdxf/lldxf/attributes.py", line 137, in _get_dxf_attrib

    return subclass_tags.get_first_value(self.code)

  File "/usr/local/lib/python3.7/site-packages/ezdxf/lldxf/tags.py", line 134, in get_first_value

    raise DXFValueError(code)

ezdxf.lldxf.const.DXFValueError: 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "python_read_dxf_ez.py", line 21, in <module>

    print("{} text: {}",format(str(dimension), dimension.dxf.text))

  File "/usr/local/lib/python3.7/site-packages/ezdxf/dxfentity.py", line 41, in __getattr__

    return self._wrapper.get_dxf_attrib(attrib)

  File "/usr/local/lib/python3.7/site-packages/ezdxf/dxfentity.py", line 203, in get_dxf_attrib

    return dxfattr.get_attrib(self, key, default)

  File "/usr/local/lib/python3.7/site-packages/ezdxf/lldxf/attributes.py", line 128, in get_attrib

    raise DXFValueError("DXFAttrib '%s' does not exist." % key)

ezdxf.lldxf.const.DXFValueError: DXFAttrib 'text' does not exist.

- - - - - - - - - -

I also tried the following code:

Code1:

msp = dxf.modelspace()


for dimension in msp.query('DIMENSION'):

 
    print("{} text: {}",format(str(dimension), dimension.dxf.text)

Code1 Result:

- - - - - - - - - -

DIMENSION(#E3)
DIMENSION(#F4)
DIMENSION(#104)
DIMENSION(#111)
DIMENSION(#11D)

- - - - - - - - - -

Code2:

msp = dxf.modelspace()


for dimension in msp.query('DIMENSION'):


    print(str(dimension.dxf))

Code2 Result:

- - - - - - - - - -

<ezdxf.dxfentity.DXFNamespace object at 0x10d32c7c8>
<ezdxf.dxfentity.DXFNamespace object at 0x10d32c828>
<ezdxf.dxfentity.DXFNamespace object at 0x10d32c888>
<ezdxf.dxfentity.DXFNamespace object at 0x10d32c8e8>
<ezdxf.dxfentity.DXFNamespace object at 0x10d32c948>

- - - - - - - - - -

Code3:

msp = dxf.modelspace()


for dimension in msp.query('DIMENSION'):

 
    print(str(dimension.dxf.txt))

Code3 Result:

- - - - - - - - - -

.

.

.

File "/usr/local/lib/python3.7/site-packages/ezdxf/lldxf/attributes.py", line 128, in get_attrib

    raise DXFValueError("DXFAttrib '%s' does not exist." % key)

ezdxf.lldxf.const.DXFValueError: DXFAttrib 'text' does not exist.

- - - - - - - - - -

can't use "dimension.dxf.text". Is the version of ezdxf different?

thank you.

[Manfred Moitzi]

It seems the text attribute is not set (present), the text attribute is not optional according to the DXF reference, but this often means nothing, because you can not rely on the DXF reference.

If AutoCAD opens your DXF drawing, an optional text attribute is ok, if not your DXF file is invalid.

To avoid such problems use the get_dxf_attrib() method, less elegant, but safe (try ... except would also work):

msp = dxf.modelspace()
for dimension in msp.query('DIMENSION'):

    text = dimension.get_dxf_attrib('text', default=None)
    if text is not None:
        print(text)

[t.ogawa]

Hi Manfred.

Thank you for reply. 

And thanks to you, the problem is solved !

Thank you so much.

t.ogawa

[t.ogawa]

Hi Manfred.

Sorry to bother you again.

I got custom label text.I was able to get the text of a custom label set to Dimension.

However, the numerical value ("4.5") of the attached image  could not be acquired.

When I read a DXF file, this number looks like an MTEXT Entity.

- - - - - - - - - - - - - - - - - - - - -

  0

MTEXT

  5

110

330

106

100

AcDbEntity

  8

FORMAT

440

 16777216

100

AcDbMText

 10

163.852832464

 20

129.1995374937

 30

2.6

 40

3.0

 41

0.0

 46

0.0

 71

     1

 72

     1

  1

4.5　　　← This one.

  7

SLDTEXTSTYLE1

- - - - - - - - - - - - - - - - - - - - -

But, I could not find it in the next way.

[Try1]

for entity in dxf.entities:

　　if e["type"] == "MTEXT":

[Try2]

msp = dxf.modelspace()

for mtext in msp.query('MTEXT'):

    print(mtext.dxfattribs())

Is there no way to get this?

thank you.

[Manfred Moitzi]

MTEXT content is organized in multiple DXF tags, therefore a method MText.get_text() exists.

[t.ogawa]

Thank you for reply.

I'm sorry I didn't make it clear enough.  

>therefore a method MText.get_text() exists.

No, I can not find any MTEXT Entity from the attached dxf.

[Try1]

for entity in dxf.entities:
  if 　entity.dxftype == "MTEXT":
　   print("MTEXT HIT")
 else:
   print（entity.dxftype)

[Try1.Result]

DIMENSION(#104)

DIMENSION(#104)

[Try2]

msp = dxf.modelspace()
for mtext in msp.query('MTEXT'):
　print(mtext.dxfattribs())

[Try2.Result]

Nothing

From the attached file, only the "DIMENSION" entity was found.