topic Re: Remove negative values while building a 2D array in LabVIEW

Remove negative values while building a 2D array

Dave@Ventec — Sat, 05 Jan 2008 15:24:43 GMT

The attached VI generates a waveform based on cursor positions and generates a results array. However, I ONLY want the results array to contain POSITIVE value elements, I would like to discard the negative AND 0 element values. My case structure only replaces the negative values with zero. How do I disguard the negative values and not add them to the results array in the first place?

Re: Remove negative values while building a 2D array

Pnt — Sat, 05 Jan 2008 16:03:44 GMT

Thats the basic idea..

Re: Remove negative values while building a 2D array

Pnt — Sat, 05 Jan 2008 16:11:25 GMT

In second thought, it would be best to initialize the array, as you know the number of samples,

and then use the replace element function.

Better memory usage with this way.

Take a look here.

http://forums.ni.com/ni/board/message?board.id=170&thread.id=292035&view=by_date_ascending&page=2

Re: Remove negative values while building a 2D array

Dave@Ventec — Sat, 05 Jan 2008 16:21:57 GMT

I am just not understanding this one. I tried to follow your example but...... Thanks for your help.

Re: Remove negative values while building a 2D array

Dave@Ventec — Sat, 05 Jan 2008 16:58:10 GMT

How do I fix the case selector error?

Re: Remove negative values while building a 2D array

Pnt — Sat, 05 Jan 2008 17:33:46 GMT

The idea is something like this.

I don't have the time to finish it, and it's a little messy.

It does not work ok.. you only check one element if it is >0... see if you can finish it

Re: Remove negative values while building a 2D array

Dave@Ventec — Sat, 05 Jan 2008 17:41:11 GMT

Yes I can, Many Thanks for you time and help!