Using xpnt the wrong way?
Mike German
Fri, 11/18/2022 - 09:36 am
Using x2pnt(waveName, x1 ) for a wave that is, for example Param v Time, and x1 is earlier than the first point in the wave, a negative number is returned. Mutiply this number by the deltax for the wave, and the answer appears to correspond roughly to how much earlier x1 is from the first point in the wave.
Is this negative returned number a hidden feature?
Yes, hidden. Internally, it just does what we recommend in our documentation: round((x-x0)/dx) without trying to clip or throw an error. It will probably remain undocumented, which means we are more or less free to change it if that becomes somehow compelling. But I think that's a pretty remote possibility.
November 18, 2022 at 02:51 pm - Permalink
No, please don't remove the useful (to those who know of it :-) feature. Useful for extrapolation.
November 19, 2022 at 03:09 am - Permalink