How to separate and group string?

[yatang]

I'm working on a radar project, and propose to receive two types of signal in labview through serial port.

The receiving signal is like:

I350

Q350

I250

Q150

IXXX

QXXX

one signal with header I, the other one with header Q, my question is how can I group string with header I together in one array, and group string with header Q in another array?

[ongeelim]

Hi yatang,

Are you using LabVIEW 2012 or later? If so, I believe this code should work for you.

Just use String Subset to extract the first letter, then compare it with I and Q, and finally, use the auto-indexing with conditional tunnel to separate out signals that starts with I and starts with Q.

Link about auto-indexing with conditional tunnel: http://zone.ni.com/reference/en-XX/help/371361K-01/lvhowto/condacc_valuesnloops/

Hope this will be helpful.

-Ee Lim-

[yatang]

Fantastic!! Thank you very much!! I'll try this method!!

[JÞB]

If course if you want to do it a bit faster than that.

[Darin.K]

I have a strong suspicion that the Search 1D Array is not doing what Jeff thinks it is doing.

[JÞB]

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@Darin.K wrote:

I have a strong suspicion that the Search 1D Array is not doing what Jeff thinks it is doing.

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Yes, that should be find first match!  (Not my day)

[yatang]

Thank you! And  I have another question, please have a look on this code, I tried two ways to display the graph after FFT, but there's no graph displayed T_T

[JÞB]

That would be becaues you a feeding an array of size 1 into the FFT

(Get rid of those DDTs- they are only letting you mis-wire your data.

[yatang]

OK, so I should build a array, thank you!

[yatang]

one more question please, how can I do it inside the loop?