binary file conversion

[cleat]

Attatched is what I been trying

[cRIO_Snowboard]

I seem to be having a similar problem myself. I have a datalogger cRIO logging from a 9205 on two channels and writing the data at 10k/sec to a .bin file. I want to convert this .bin file to a .dat file (or something else I can open simply in matlab as this is the program my supervisor at uni uses). The engineers at NI wrote me a file converter which appears to work but when plotted shows high levels of saturation (at 32K) and I think there is an error somewhere with regards to swaping a 32bit integer for a 16bit integer but I am not sure. If I load it back into the main labview vi where they engineered a 'load data' option the .bin file reads perfect with no saturation. I tried the tutorials for reading a binary file and also the converter someone posted on here but niether seemed to be what I was looking for.

I have attached the file converter and a sample of my data here.

Any help with this very gratefully apprechiated 🙂 I'm using labview 8.5 if thats anyhelp.

[altenbach]

You did not attach a sample of your data. Do you have any documentation on the file structure?

Can you show us how the main VI loads the data? Did you compare the code?

[cRIO_Snowboard]

It would not let me attach a .bin file for some reason.

I have no documentaion on the file stucture, what I was supplied with from NI was a fully automated bit of code that meant I would not need to get involved in the VI's as such but that appears to not be the case following this minor hiccup.

The main VI loads the data inside a 'while loop' as far as I can gather, it has a few read binary file icons in it. I don't really understand the VI at all if I am honest as I have done no labview programming myself it was all written for me by the engineers as agreed when I brought cRIO.

I don't know what you mean by compare the code? I am unable to open it in notepad or anythng like that. It only opens in Labview if I put it in a certain directory and click load.

Thanks 🙂

[altenbach]

Only certain file extensions are allowed as attachments. So put everything in a zip file before attaching.

If you have LabVIEW code that can correctly read it and some other code that cannot, all you need to do is inspect for differences. If you could attach the main VI, I can compare it with the code you posted earlier to see if there are differences.

We should be able to figure out the data structure once we have code that can read it correctly. Most likely you could then even write a matlab program that can read the binary file. 😉

[rainaby]

I wrote a binary file of 2-d array of a cluster(which is a 2-d bitmap) now i want to retrive it. how to do it as the stored data is totally in binary when brought out.

[crossrulz]

You really should have started a new thread.  This current one is 6 years old.

Can you share some code of how you wrote the file and how you are trying to read it?  You can probably just use the Read Binary File and supply an array of your cluster as a data type.

[rainaby]

CAN I HAVE YOUR EMAIL ID?

[rainaby]

Here is our code

[crossrulz]

You need to attach the code to the post.