Number Array to Boolean Array ??

[Michael_Fidler]

I am trying to read in an array of four values that are either "0" or "1" and I want to convert them to boolean true/false so that I can write true/false to a digital TTL signal from my USB-6008 DAQ. I'm using LabVIEW 8.0.

To simplify the problem, I have created the vi attached. Is there a way to make this work? It is currently only reading the first of the four values.

Michael J Fidler

[Evan]

An easy way to convert numeric 0s and 1s to their boolean conterpart is simple using the !=0 function.

So there is no reason to do all the conversions you are doing, simply take the value do the comparison and build your array.

[Michael_Fidler]

Thanks Evan, but could you be a little more specific? I don't know what the "!=0" function is and nothing shows up in the LabVIEW help when I search for !=0.

Michael J Fidler

[altenbach · Accepted solution]

"Not equal zero" from the comparison palette. 😉

[Michael_Fidler]

Simply amazing. Thanks guys!

Michael J Fidler

[altenbach]

Here's a quick example:

Message Edited by altenbach on 05-01-2007 12:22 PM

[Evan]

The funny thing is that I didn't even think of spelling it out.  I think I am having a nerd day.

[Michael_Fidler]

When I see "!" I think "bang" and not "not". Now I know.

Michael J Fidler

[tbob]

Looks like I'm too slow, but here is my response anyway:

There is a function called Boolean to (0,1), I wish there was (0,1) to Boolean function.  I usually just use the Not Equal to Zero function to output a boolean.  0 causes a false and 1 causes a true.  Then just build an array of the 4 booleans.

Message Edited by tbob on 05-01-2007 01:33 PM

[TCPlomp]

---

@tbob wrote:

Looks like I'm too slow, but here is my response anyway:

There is a function called Boolean to (0,1), I wish there was (0,1) to Boolean function. 

---

It's called typecast, in general true is defined as !0 (or not zero for the not so nerds).

Be aware that typecasting width different data sizes you can get strange results.

Ton