Fix #533

[artpelling]

Closes #533

[mberz]

Thanks for implementing.
I'm a bit unsure though about the implicit and arbitrary selection of a single value from an array here. I think I'd prefer if this is a bit more verbose, otherwise users might assume that multi-rate signals are supported.
Could your maybe add a warning?
Also I was thinking if this could additionally check if the array is longer than a single entry and raise an exception in this case.

[f-brinkmann]

Could your maybe add a warning? Also I was thinking if this could additionally check if the array is longer than a single entry and raise an exception in this case.

Maybe it's sufficient to raise an exception if there are more then one entry and convert silently otherwise?

[mberz]

I'd also be okay with that.

[pingelit]

Thanks for the effort, I agree with the suggestion by f-brinkmann to to raise an exception if there are more than one entry.