build a conditional look up table

[Yonsh]

Hi

I'm using a 7.1 ver.

I want to build a conditional look up table, my data include two corresponding values; Volt an Watt which i got from measurements that i had. If it was a regular LUT there was no problem (i saw a perfect solution for a regular LUT:    http://forums.ni.com/ni/board/message?board.id=170&message.id=241488&query.id=102139#M241488 )

i need for each transformation to choice a different table, based on the frequency that i use. - that's the problem for me.

i attached the measurements file for more information.

note that the inputs is volts and the output is Watts, and the conditional is Freq. 

thanks and hopping for ideas.

[tst]

You can use Ben's example by extending it and performing a double lookup. If your arrays are always of the same length, you can simply have a 2D array and extract your element from it by wiring in your two index arrays and searching both of them. If your arrays can have different lengths, create a 1D array of clusters where the cluster holds a 1D array. This will allow each internal 1D array to have a different length.

[Yonsh]

but HOW???

i have a lot of info!!!!  the file i upload is not all of it. i have massive amount of data.

if i work at the same way and put all of Ben's vi into another for/while then it work with the wrong data.

how i change the "sub data" for the 2nd dimension (for different Freq. value)????

i can't see the solution.

by the way - i'm pretty much a beginner in labview so maybe because if this i can't see it happen.

and another question: why my for/while loop don't stop the "random number" function??? 

thanks 

[tst]

Here is a very quick example which shows the concept.

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@Yonsh wrote:

and another question: why my for/while loop don't stop the "random number" function??? 

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I'm not sure what you mean by that. The random number function just outputs a random number once, regardless of where it is called.

To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. Here, here, here, here, here and here are a few you can start with and here are some tutorial videos. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide and the LabVIEW user manual (Help>>Search the LabVIEW Bookshelf).