greater than function not sourcing bool?

[Bwts]

HI, I have the following.

Whenever I try to connect the 'Greater than' output to the AND function I keep getting a connection error "Dynamic type not Bool" well something like that. If this is the case how come I was allowed to connect the 'Less than' function to the AND?

[systemcrash]

Wow this is some new thing, I am also seeing the same in 8.6 version, Lesser than VI outputs dynamic data but not greater than VI. Nice question.

[altenbach]

Interesting.

[Dennis_Knutson]

Both output dynamic data but only one input of the AND can be dynamic. More evidence to avoid the (evil) dynamic data type. The input to the greater than/less than functions should be converted to a scalar or 1D data - whatever it actually is.

[altenbach]

I don't use dynamic data either, but in your case you could use the limit testing express VI.

[Bwts]

Hi, I have looked in the help file to convert from dynamic and it tells me to look in the 'Express palette' but the vi isnt anywhere to be found?

[altenbach]

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@Bwts wrote:

Hi, I have looked in the help file to convert from dynamic and it tells me to look in the 'Express palette' but the vi isnt anywhere to be found?

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It is under "express.signal manipulation". Look for "from DDT". 

[Bwts]

Thanks but I'm more confused now.

I would like the output of the conditional block to give a Bool. So if the input signal is between two levels then I just get a 1??? (like every other computer programming langauge)

[Bwts]

if (x>a) AND (x<b) then TRUE

[altenbach]

• You can first convert the original data to an array and then do the comparison (e.g. using in "range and coerce")
• or you can say that you want a boolean output in the "From DDT" dialog.