extracting data from a for loop

[hadi1989]

Hi,

I have written a program which commands a current supplier to raise the current from 0 to 50 A, during 1000 iteration. This current goes through a coil and forms a variable magnetic field. A gaussmeter is provided to measure the field. My aim is to record the field for each iteration. I have added the gaussmeter program in initial for loop so that I can read field corresponding to each momentary current. My problem is how to extract an array containing 1000 recorded fields from the loop and save it. I really appreciate it if you guide me.
Many thanks,
Hadi

[PalanivelThiruvenkadam]

share the code which you tried.

[GerdW]

Hi Hadi,

use autoindexing tunnels to get your array with 1000 measurement values!

It's a very basic LabVIEW feature so I want to recommend you to go through the free online resources provided by NI.com to learn LabVIEW! 😉

[mtwar]

Hello!

I'm not pretty sure I have understood you correctly but I have prepared some 'overview' piece of code. Maybe you can extract something from it 🙂

If you still have problems, please share the code.

Marcin

[hadi1989]

Dear Marcin I'm really grateful for your valuable response. I attached my code. It is a flat sequence structure includin 5 frames. In frames 1, 3, and 5 I've added a programe to read the field. I need a file containing 1000 values of recorded fields.

Bests,

[mtwar · Accepted solution]

Hello!

As I understand from your code you get the values as a strings? (substring, substring 2 and substring 3)

In my opinion the best way to do it without refactoring the code is to create a queue with string as datatype. See the attachements (VI Snippet and VI contains exactly the same code but I have saved VI for the LabVIEW 8.6 version).

For the future projects, consider using State Machine https://www.ni.com/en/support/documentation/supplemental/16/simple-state-machine-template-documentat... Stacked (or flat) Sequence Structures are really diffucult to understand for other people than developer.

It is also always easier to share the code using VI Snippets https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000x2PkCAI&l=en-US

Please, let me know whether it has helped you 🙂

[hadi1989]

many many thanks. your tips are quite helpfule and precious. 

[GerdW · Accepted solution]

Hi hadi,

I need a file containing 1000 values of recorded fields.

Then why don't you save the string(s) one after the other into a file? No need to build arrays first…

Atleast it would have been the first and simplest method to store your data!

Beside this:

Learn LabVIEW. THINK DATAFLOW!

Reduce the usage of sequences…