This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Wenwu,
> Thanks a lot for your help. I'll try "-close" option.
Thank you.  The "-overwrite" option doesn't work as it should in the
FILE and STDIOFILE actions.  I've fixed it and it will be in the next
release.
> I have another question about LDM data transferring. Have you heard or
> known that the files crashed through ldm. I found that there were a few
> number of files changed through ldm: the original file displays fine but
> transferred file changed through ldm (display different image). Is there
> any points I can check?
Considering the usage of the LDM, I would be extremely surprised if the
LDM was modifying files.  I consider it far more likely that the files were
modified before being given to the source LDM or that they were modified
by the LDM decoder at the receiving site.  To be convinced, I would need
the following:
    The original file.
    Proof that the original file was given to the source LDM unmodified.
    Proof that the file was received correctly by the receiving LDM.
    Proof that the file was unmodified by the LDM decoder at the
    receiving site.
    The received file.
Regards,
Steve Emmerson
Ticket Details
===================
Ticket ID: QOQ-440372
Department: Support LDM
Priority: Normal
Status: Closed