bytes array to double words array

[nyc_(is_out_of_here)]

I have an array of bytes. I need to take 4 bytes at a time to create a doubleword (32bits).

I am currently using Decimate Array and Join Numbers twice to do this.

Is there a more efficient way of doing this that I am overlooking?

[GregFreeman]

You can use get array subset VI get array subsets of 0-3, 4-7, etc etc and type cast. Don't know if this is more efficient, but is another way.

Message Edited by for(imstuck) on 06-14-2010 02:34 PM

[smercurio_fc]

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for(imstuck) wrote:
You can use get array subset VI get array subsets of 0-3, 4-7, etc etc and type cast. Don't know if this is more efficient, but is another way.

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There is indeed. Just do it directly:

 

Note: This assumes no need to perform endianness manipulation. In that case you can use the Unflatten From String function, though that would require a detour to go to a string.

Message Edited by smercurio_fc on 06-14-2010 02:44 PM

[tbob]

I would like to see the underlying code behind the Type Cast function.  It does so much.  Hmmm.... maybe I don't want to see it after all. 

[GregFreeman]

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smercurio_fc wrote:

There is indeed. Just do it directly:

 

Note: This assumes no need to perform endianness manipulation. In that case you can use the Unflatten From String function, though that would require a detour to go to a string.

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Doh, duh.

[nyc_(is_out_of_here)]

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for(imstuck) wrote:

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smercurio_fc wrote:

There is indeed. Just do it directly:

 

Note: This assumes no need to perform endianness manipulation. In that case you can use the Unflatten From String function, though that would require a detour to go to a string.

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Doh, duh.

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Ditto.

Will give it a try tomorrow.

[nyc_(is_out_of_here)]

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smercurio_fc wrote:

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for(imstuck) wrote:
You can use get array subset VI get array subsets of 0-3, 4-7, etc etc and type cast. Don't know if this is more efficient, but is another way.

---

There is indeed. Just do it directly:

 

Note: This assumes no need to perform endianness manipulation. In that case you can use the Unflatten From String function, though that would require a detour to go to a string.

Message Edited by smercurio_fc on 06-14-2010 02:44 PM

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I do have to perform endian manipulation. The information is little endian. My original information is a string from a TCPIP read. My current attempt is to convert it to a bytes array.

Can you explain in more detail what I would do in this case?

[smercurio_fc · Accepted solution]

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nyc wrote: I do have to perform endian manipulation. The information is little endian. My original information is a string from a TCPIP read. My current attempt is to convert it to a bytes array.

Can you explain in more detail what I would do in this case?

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As I noted, you can use the Unflatten From String. Since the data is coming from a TCP Read you can wire that directly to it:

Message Edited by smercurio_fc on 06-15-2010 09:19 AM

[nyc_(is_out_of_here)]

Got it!

Thank you.