Build waveform Input parameter input t0 should be timestamp. but some example I saw numeric constant. is it possible

[Abhilash_Adv]

Build waveform Input parameter input t0 should be timestamp. but some example I saw numeric constant. is it possible?

[altenbach · Accepted solution]

Obviously it is possible, else you would not see it. 😄

You can easily convert between timestamp and DBL and back to timestamp and there is typically no noticeable loss. The t0 of a waveform defines the time of the first point. A timestamp is useful for absolute time (the first point is today right now) and a DBL is useful for relative time (e.g. if the first point has time=zero, the start of the experiment). If you display the data on a graph, make sure to set the time axis formatting accordingly.

[Abhilash_Adv]

Still getting error !

[altenbach · Accepted solution]

OK, Finally I am at a computer and it seems you are right. For some reason, modern waveforms don't accept DBL for some unknown reason.

There are two items to consider:

(A) I typically use the "legacy waveform", which is just a cluster of t0, dt, and data that existed before the introduction of the waveform datatype. Graphs understand it and will adjust the x axis scaling accordingly.  I like it because it also accepts 2D arrays as data, for multiple plots.

(B) The special timestamp datatype might have been introduced later the waveform datatype, so very old code might still have a DBL as dt. I am really not sure about the details anymore, just guessing here. Seems like you just need to convert as follows: