saving cluster of different data types to a file

[handre]

Hi,

I use LV 8.6 SDK. I need to save clusters of different data types to a file on a disk, row by row.

To be specific: I have a program that performs various investigations on a signal collected by DAQmx. Each time the quality of the signal is not in a specified boundaries, i get an indication. It is a cluster of time stamp, string, dbl, and Boolean. The program is supposed to run for few weeks in a row so there can be a lot of these indications. I expect to have around 200 000 rows a week (Altogether, divided into several groups).  

I thought about TDMS but I am not able to save such a cluster. And I would like to save it as tdms cause i could divide the data to different groups. I also thought about data base but that would be the first time i use db and I really do not  have time to learn that now.

I know it is possible to change some of the data types to others, ex Boolean to 0-1, but i need a string and a time stamp there. 

Can someone advise me which data format should I use? Which one is the best one in this situation?

Thanks in advance

handre

[Pnt]

If you do not need to access data from another application (other than Labview) you can just save it as a binary file.

It is the best choice (for me).

I made an example with one cluster. You can replace that with an array of clusters, of that data type.

[handre]

Thanks for your answer!

I forgot to add that I would like to use the data not in LV afterwards for investigations. Is it possible to open binary files for example in Matlab?

Moreover, I like tdms because I can write and read data at the same time. It is probably not possible in binary format,  isn't it?

Regards

handre

[Pnt]

If you want a TDMS file , one solution is to convert all your data to strings.

You will have a 2D array which it can be stored in TDMS.

Each row will be one measurement.