TDM file more than TDX
I run a batch script that downloads data, analyzes and stores them for later use, but the size of the TOC file is approximately 2.5 MB, when the size of files TDX is only 0.5 MB. It seems strange that my meta data is ~ 5 x the size of my real data.
Any idea of what could happen here and suggestions to fix it?
There is an available compression method that only works for the TOC header.
Option Explicit
Dim targetfile: targetfile = "C:\temp\target.tdm."
Call DataFileSave ("" & replace (targetfile, "&", "&") & " zip ", "CT" ")
which is available only by using script.
Be aware that this will end with a header of tdm aompressed and a file binary tdx.
But it might help in your place if you really need the smaller headers.
Old version of tiara not will also be able to read these files.
You will also pay an additional load with a little time. Check yourself.
Tags: NI Software
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"Eren Reid" wrote in message news: 08550af5-b5ff-4611-b6e7-1f962994bdde...
> the computer crashes when I open a folder with files large insode of
> it is 23 files more than 800 MB each.
>
> I have full vista with CPU core 2 quad Q9650 with 4 GB of ram on a
> 32 bits of the operating system. Vista is up to date as well as all other drivers.
> there is no problem of virus. It sems to be a problem to explore. whenever I have
> open this particular file, it freezes for a second and then seems ok.
> so if try to do anything the computer freezes... I can move the
> mouse but I cannot click on anything whatsoever
>
> any ideas?
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Opening of TDMS files larger than 500 MB in LabVIEW
Hello
We were faced with a problem when opening files TDMS connected using a LabVIEW, PDM Viewer (the vi in palette Advanced TDMS) application, or by creating a new PDM vi player. The recorder app is built using TDMS functions in palette file.
When the TDMS files are everywhere higher than 500 MB or the application hangs or crashes. It can sometimes give full error memory.
I browsed the forum and found the screws to split large TDMS files into smaller files and then open them. The other option is to use NI DIAdem. Currently, we use the option of the tiara. We do not want to modify the application to split the files into smaller sizes.
I'd like to understand why this is happening for files of these formats. I can easily play TDMS of 100 or 200 MB files.
The configuration of the system plays a role in the present? How is it that DIAdem can open the file and cannot LabVIEW?
request explanation
Thank you
Freelance_LV wrote:
[..]
What I want is to know if upgrade to Win 7 and LV 64-bit will solve this problem, without cut it files each time, or use the TDMS vi Viewer.
More likely since the channel data is placed in a very wide range and fragmentation of memory makes it very hard on 32 bit with LV 32-bit OS. Another thing that could be a problem on your 32 bit LV: display data as it creates a copy of data. So maybe the original data of the channel can hold in memory, but tries to display it sweeps away memory.
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Can I save a TDM file without its TDX data?
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Thank you.
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++++++++++++++++++++++++++++++++++++++++++++++++++++
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Source: Application error
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Event ID: 1000
Task category: (100)
Level: error
Keywords: Classic
User: n/a
Computer: beersonic-PC
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1000
2
100
0 x 80000000000000
12147
Application
beersonic-PC
Explorer.EXE
6.1.7600.16450
4aebab8d
Qedit.dll
6.6.7600.16385
4a5be02b
c0000005
000000000006bb73
133C
01caa461b0159e53
C:\Windows\Explorer.exe
C:\Windows\System32\qedit.dll
1dd76da9-1055-11df-A980-00195bd2573a
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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User: n/a
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4
0
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beersonic-PC
10675835
4
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Retrieve tdx without tdm file data
Hello
I have a tdx 3.7 GB containing important data file, but the file TOC is empty. All my other files are fine and I barely noticed it (although it is probably the second most important). I hope that it is of the tdx data recovery?
I wondererd if I could recreate the TOC file, because I know EXACTLY what process has created it and so could repeat and copy and paste the new file. Anyone know if it works, or have any other ideas? (I ask here as idon't want to spend loads of time to do if it does not work).
Thank you very much for your help, I could really do with this data,
James
Hi James,
Thank you for your message.
Unfortunately there is no way to recover the data raw tdx, if the CT file is lost. The tdx file is data binary raw efficiently and without the metadata contained in the file of the tdm, there is no way to determine it's significant. This means also that you cannot create the file TOC the tdx file alone.
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Hope this helps, let me know how you go.
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