Waveform NI_ChannelName as string

[John Hoard]

When using the GetWaveformAttributes vi specifying "NI_ChannelName", the returned value is a variant.  Thus, it can't be passed to routines that expect a string channel name.

I can't find a way to convert the Variant to String.

There must be a way to get the channel name as a text string!

[Bob_Y.]

Varient to data will do the trick.  Search for it from the functions palette.  (It is located in several places in LabVIEW 7.x and in a totally different one in LabVIEW 8.0).  I think you can also use format into string. 
Hope that this helps,
Bob Young

[John Hoard]

Thanks, that did it.  I had tried several other methods but all gave junk.  I didn't find this because I looked in String functions and Waveform functions.... not in Clusters!

[ATE_Dude_22]

I'm having the same issue, but when I wire a string to variant type, I get an error "datatype of the variant is not compatible with the data type wired to the type input"

I'm trying to extract the waveform name from the attributes and having little luck, any suggestions?

[GerdW]

Hi Dude,

have you tried to wire an (empty) string to the type ("default value") input of GetWaveformAttribute?

[ATE_Dude_22]

I figured it out, just have to do it as a two step process, like this.

Thanks.

[GerdW]

Hi dude,

using my comment it would be a one step process…

[ATE_Dude_22]

can you provide an example?

[GerdW]

Hi dude,

one step:

[ATE_Dude_22]

Could have sworn I tried that and was getting error?!?!?! Anywho, thanks for the suggestion.