<div dir="ltr"><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>
In MobilityDB an underlying assumption is that all temporal types with instantset subtype cannot assume any interpolation. A typical case is collecting check-ins for social networks like Foursquare. </div><div><br></div><div>If in your particular application you can assume some interpolation for the missing timestamps (e.g. using the previous and/or subsequent known timestamp) I would suggest to use SQL window functions</div><div><a href="https://www.postgresql.org/docs/13/tutorial-window.html">https://www.postgresql.org/docs/13/tutorial-window.html</a><br></div></div></div></div><a href="https://www.postgresql.org/docs/13/functions-window.html">https://www.postgresql.org/docs/13/functions-window.html</a><br><div>such as lead or lag to fill the missing timestamps before entering them into MobilityDB.</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 21, 2021 at 6:38 PM Jannis R <<a href="mailto:mail@jannisr.de">mail@jannisr.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">hey everyone!<br>
<br>
is it possible to construct a `tgeogpointi` from a list of `geography` + `timestamptz` items if some of the items don't have a `timestamptz`? or to put it another way: i have a geospatial + temporal trajectory, where I only know the temporal value of *some* of the points.<br>
<br>
ideally, i would like mobilitydb to interpolate between them on the fly. do i understand correctly that there's no such feature?<br>
<br>
– jannis<br>
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