How to open the same file with different versions of Coppeliasim?

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nuozhe
Posts: 5
Joined: 14 Nov 2024, 14:43

How to open the same file with different versions of Coppeliasim?

Post by nuozhe »

I have a file with version 4.7.0. How to open it with version 4.1.0 and 4.8.0?
It seems that there is no option to save as a low or high version in the software
Please provide some guidance. Thank you.
coppelia
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Posts: 10747
Joined: 14 Dec 2012, 00:25

Re: How to open the same file with different versions of Coppeliasim?

Post by coppelia »

Hello,

file format should always be forward-compatible. This means that if you saved a scene in CoppeliaSim version x, you should be able to open that file in CoppeliaSim version x+n.
Backward compatibility is very difficult to maintain, mainly because newly appeared features cannot be reproduced in an older CoppeliaSim version. So newer features are ignored in older CoppeliaSim versions, or simply not recognized (e.g. a new API function that is used in CoppeliaSim version x, won't be recognized in CoppeliaSim version x-n and generate an error).

Finally, we moved away from a float-based, to a double-based file format in version 4.5: that version is a bridge version, that reads and writes data as floats and doubles (i.e. contains redundant information). So if you need to move back to anterior file formats, make sure to first save your scene in V4.5, then it should be readable in versions anterior to that too.

Cheers
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