How to return subset of an array based condition bits

[oly]

Hi,

I have a question about how to get subset of array based on condition bits...

For example, if I got one 4x4 2D data array from DAQ system,

 Array 1:

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4

and one 1D array indicating the conditions of each channel... 

Array 2:

1

0

1

0

The function I want to realize is to pick up the data only from the channels whose condition bits are 1. For the example above, I only want to pick up data from channel 0 and channel 2. Any idea? Thank you!

[smercurio_fc]

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oly wrote:

Any idea? Thank you!

---

Lots. Let's start with Index Array. Try that - it's not hard. Trust me. 

Of course, there's also an OpenG VI that will do this. 

And if you wanted to be obscene you could use the Select Signals Express VI. 

[oly]

Thanks for your suggestion! smercurio_fc!

I was using delete from array function before, which made the program a little bit complicated...

For the example above, 

1 2 3 4

1 2 3 4

1 2 3 4

1 2 3 4 

With condition bits, 

1

0

1

0

Colume 1 and 3 need to be deleted.

After column 1 was deleted, the data array changed into

1 3 4

1 3 4

1 3 4

1 3 4  

Now column 2 need to be deleted, which is the original column 3. I guess I complicated the program. 

One more thing is that the size of the original array is not fixed.

I will  try the index array function and post the code.

Any other idea how to realize this a little bit quick? I mean if the original array is 500X400, I guess it will take long time for the this to complete...Thank you!

[RavensFan]

Delete the higher number columns first.

[srikrishnaNF · Accepted solution]

Hi oly,

 Check this VI...

Thanks and regards,

srikrishnaNF

[TCPlomp]

Here's a snippet usin OpenG tools to remove the correct columns:

Ton

Message Edited by TCPlomp on 12-01-2010 07:50 AM

[oly]

Hi all,

Thank you! All the solutions you guys gave are working great!!!!