# Interpolating Coordinates **URL:** \ **Category:** Tutorials\ **Created:** [July 20, 2019, 4:24am UTC](https://forum.inaturalist.org/t/interpolating-coordinates/5170 "2019-07-20T04:24:48Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![kueda](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/kueda/32/20_2.png) [@kueda](https://forum.inaturalist.org/u/kueda)\ **Post date:** [July 20, 2019, 4:24am UTC](https://forum.inaturalist.org/t/interpolating-coordinates/5170/1 "2019-07-20T04:24:48Z")
This is a weird URL hack that’s existed for some time but we’ve never worked into the UI (mostly b/c it’s so niche and kind of hard to explain, but maybe we should), but if you have an obs that has no coordinates and you have other obs from the same day and all those obs from that day have times, appending `?interpolate_coordinates=true` to the edit observation URL (the URL you’re at when you’re editing an obs, e.g. `https://www.inaturalist.org/observations/edit?interpolate_coordinates=true`) will fill in coordinates based on a time-weighted average of the nearest observations in time. --- _[View the full topic](https://forum.inaturalist.org/t/interpolating-coordinates/5170)._