archiving models for the future

[cacciatorino]

a very interesting post on deelip.com:
http://www.deelip.com/?p=5156you ask which format is best to use to store your models and have a good chance of being able to have the archive available readable between 20 or 30 years.

to read deelip, the current choices seem:

1) iges ma deelip not recommend it because of the great "proliferation" of dialects and modifications, so you do not know what could happen in a few years with a file saved now.

2) good step but seems to be taking the way of the iges

3) jt would seem the best but requires, if I understand correctly, to pay a license to siemens to write a translator by independent developers. It's also an open standard but owned by a private company that could change it when and how it wants. . .

4) Very good 3dpdf and it's a standard iso, as it may soon be the jt, but adobe has abandoned it recently so you don't know what will end it.

the automotive world seems to go towards the jt, instead the aerospace requires the step, according to the lotar program (long term archival and retrieval).

How are you doing? I have not dealt with the problem for now and I care about my proprietary files, but more for lack of time to convert than by deliberate decision, for office documents fortunately use opendocumentformat so I have no problem.

 

[Meccbell]

step and nothing more. :finger:

 

[Matteo]

for now step.

 

[sail]

for my data I use the owner format of the cad in use and amen. However I always keep aside the maths sent to the suppliers so I have more or less a copy in step (much less iges) of almost everything. even if rebuilding the assemblies and all logic from the step files would be a bloodbath.

 

[The_Matrix]

a very interesting post on deelip.com:
http://www.deelip.com/?p=5156you ask which format is best to use to store your models and have a good chance of being able to have the archive available readable between 20 or 30 years.

to read deelip, the current choices seem:

1) iges ma deelip not recommend it because of the great "proliferation" of dialects and modifications, so you do not know what could happen in a few years with a file saved now.

2) good step but seems to be taking the way of the iges

3) jt would seem the best but requires, if I understand correctly, to pay a license to siemens to write a translator by independent developers. It's also an open standard but owned by a private company that could change it when and how it wants. . .

4) Very good 3dpdf and it's a standard iso, as it may soon be the jt, but adobe has abandoned it recently so you don't know what will end it.

the automotive world seems to go towards the jt, instead the aerospace requires the step, according to the lotar program (long term archival and retrieval).

How are you doing? I have not dealt with the problem for now and I care about my proprietary files, but more for lack of time to convert than by deliberate decision, for office documents fortunately use opendocumentformat so I have no problem.

What a beautiful hunting discussion... :finger:

fiat will use the jt...
the jt will be standard iso soon and its specifications are public.
to change the format you need to be part of the jt open consortium... is he who decides the technical content. . .

really adobe abandoned the 3dpdf?

 

[Matteo]

for now step.

... sometimes (but only in addition to the step) also sat (acis) as well as (always) also in the native format.

That's a good fight. .

I associate myself, one of the most useful and interesting of recent times: I propose to promote it so that it always stays at the top of the section.

 

[cacciatorino]

really adobe abandoned the 3dpdf?

Unfortunately yes, they considered technology not interesting for their business and sold it to www.tetra4d.com
http://www.deelip.com/?p=3845

 

[cacciatorino]

I associate myself, one of the most useful and interesting of recent times: I propose to promote it so that it always stays at the top of the section.

It has been almost unnoticed for a long time :biggrin:, although in fact the subject is very delicate, and invests not only the design of course but the whole world of digitalized documents.

It would be interesting to know how the great national libraries behave on this subject, both for videos and writings.

 

[The_Matrix]

http://www.plm.automation.siemens.c...se.cfm?component=120015&componenttemplate=822Things move...

 

[Matteo]

what are the advantages and disadvantages of the various formats?

 

[cacciatorino]

what are the advantages and disadvantages of the various formats?

one of the advantages of the jt (and the pdf3d of which it shares the origin) is that it is much more powerful in step and iges, in the sense that it allows to transfer also metadata (and therefore product info), pmi (and therefore the constraints on the geometry of the piece), and in perspective also the constraints of together and the association between model and table. In theory it's very powerful, however we wait for the_matrix that can definitely describe it better. relative to the topic, surely for the long term will be better than the proprietary formats, but I don't know if it is to consider a more durable format of the step, but the glass ball does not have it.

we hope standardization is done better than the standardization of microsoft ooxml.