Combining Data Files

I am using Dewesoft X 2021 for collecting vibration data on a vehicle. During the last test run I had to start and stop the DAQ multiple times due to vehicle issues. Is it possible to combine these files into a single .dxd file?

Hi Andrew,

You can mark data files which are made with the same setup and choose "Multifile Export".

Data files will be reworked into a multifile and can be opened as one data file, just mark the exported files and press enter to open them.

Notice that all of the "not storing" time will be shown as a blank data file because the data files will be putted on the time axis referring to the absolute time of storing.

Best Regards.
Matjaž

Hi.
I'm using this instruction to combine data sets which I got to work, however when opening the multifile exports there's a very long dead space between each data set.

When acquiring the data originally I set a storing parameter to "Stop storing after" 2 seconds.
So each data file is only two seconds long but upwards of 55 seconds of nothing between sets.

How do I concatenate this?

Hello,

Unfortunately, the blank pockets between files are result of absolute timing when putting the data on the time axis.
In your case would be a lot better if you would record a multifile with "fast storing on trigger, slow otherwise" that trigger can be defined as user input channel with button in measurement window.
One way to import the channels without the gaps between files would be that you record a "blank" data file which is longer that all the data files are long in combined and use Import option for importing the channels into that "blank" data file with offset. Video example attached on Drive.

I hope that works for you.

@Matjaž Strniša

Hi.

I believe I tried the "fast storing on trigger, slow otherwise" and it wouldn't let me multifile export. I would have to try again to be sure.

Furthermore, there's a strange behavior; when selecting multifiles for analysis the upper title bar doesn't update.

For instance. When selecting "RH_Vert-Up_..."

The title bar shows a selection made at the start of software launch:

Hi.

This behaviour that the name of files isn't correct is not a known behaviour. Did you rename the files manually by hand?

Which version of DewesoftX are you using?

Is that error from the above screenshot somehow related with opening these multifiles?

Kind regards

@Matjaž Strniša

Version: 2021.2 (RELEASE-210430) (64-bit)

I always name the files from the Storing tab in Measure mode. In very rare instances I'll rename them from within the Analyze>Data Files window but that's not the case in the above example. In the above example Dewesoft has done all the naming (short of the root name), including appending the _exp. 

I don't think the error in the screenshot was related to the multifile. I just re-opened those same files and the error is not present. I believe that is from a fussy math channel. I had a AE here looking into some other things with me and he wanted to look closer at that error. Unrelated to the title bar. 

That said, when opening up the multifile just now there is now a totally DIFFERENT file name at the top of the title bar. A file in a separate folder that I never opened since software launch. So I don't know where its pulling the titles from. 

Have a look through the log files if you'd like. 

Okay
after some extensive testing trying to duplicate this title bar issue I think I can repeat it.

You must first select and load (or double click) a single data file- not a multifile.

From there if you select a multifile set and hit enter, it will retain the title of the single file selected in step one.

Hello,

This was reproduced from our side and reported to our developers as a bug.
Thank you for your explanation on how to get it reproduced.

I'll get back to you here when the issue will be resolved.


Best regards.

Hello Lemmy,

I would like to inform you that this issue was resolved in version 2021/5/RC-210914 which is available on our website.

Best regards.