Queues containing a 2D array?

[ErikaN]

Hi,

I have taken over a program that set time stamps on neutron pulses coming from two different detectors. These time stamps are then put in a queue and if the queue contains any data these will be written to a file for later analysis. My problem is that I want to be able to determine from which detector a certain pulse came. So, I wonder if the queue could contain a 2D array where in the first column I put the times for the neutrons in the first detector and in the second column I put the times for the second detector. Is this possible?

If not, can I have more than one queue in the program (so that each detector has an own queue)?

Thanks in advance

Best regards,

Erika

[MikeS81 · Accepted solution]

Hi Erika,

you can use a 2D array as queue data, see the attached picture. You can also use two or more queues in your program. I would use two queues to solve it.

Mike

Message Edited by MikeS81 on 03-18-2009 02:09 PM

[ErikaN]

Hi Mike,

Thank you for your quick answer! Two short "follow-up" questions:

In the Enqueue Element can I specify in which column I want to add a value?

Is it faster to use two queues?

Regards,

Erika

[MikeS81]

Hi Erika,

no you can't, you can only add a new 2d Array as new element. I think two queues would be faster, but the main advantage is that you can handle them independently.

Mike

Message Edited by MikeS81 on 03-18-2009 04:10 PM

[Ben]

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MikeS81 wrote:

Hi Erika,

no you can't, you can only add a new 2d Array as new element. I think two queues would be faster, but the main advantage is that you can handle them independently.

Mike

Message Edited by MikeS81 on 03-18-2009 04:10 PM

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My guts says the contrary since it would be double the work (but 2 X zero is still a small number ).

Two queues would introduce complications trying to figure which element from this queues goes with which element for the other queue.

Just my 2 cents,

Ben

[altenbach]

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ErikaN wrote:

In the Enqueue Element can I specify in which column I want to add a value?

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If you simply want a 2D array in memory and replace elements, columns, rows, etc. as desired, you might want to create an action engine that contains a single 2D array in a shift register.

Detector 0 would write to row 0 and detector 1 to row 1, for example while the read action would read both columns.

Message Edited by altenbach on 03-18-2009 09:03 AM