Many thanks Tom, Perfect just what I needed and it work as expected. While it may be undocumented it is a nice feature.
All the best. Peter On Monday, 4 February 2019 13:37:50 UTC, Thomas Keffer wrote: > > The $current object has an undocumented feature that allows a timestamp to > be specified. It looks something like this (NOT TESTED): > > #set $yesterday=$current.dateTime.raw - 86400 > <p>The temperature 24 hours ago was $current(timestamp=$yesterday).outTemp > </p> > > Because a timestamp 24 hours ago may not fall precisely on when a record > is available, the feature also allows a "max delta" to be specified. A > record that falls within max_delta is considered "good enough." So, if > you're willing to accept anything within 10 minutes, the template would > look like: > > <p>The temperature approximately 24 hours ago was > $current(timestamp=$yesterday, max_delta=600).outTemp </p> > > Note that this is undocumented, unsupported, and untested. It's a little > clumsy, so it's also likely to change at some future point. Still, I'd be > interested in your experience using it. > > -tk > > On Mon, Feb 4, 2019 at 5:08 AM phopwooduk via weewx-user < > [email protected] <javascript:>> wrote: > >> Hi, >> >> >> >> I am new here and this is my first post. >> >> >> >> I am using a modified version of the NeoWx skin, I would like to show >> Temperature at this time yesterday. I can see there are methods for >> showing aggregation of values min, max etc in the past. But I can only see >> how to get down to a resolution of 1 hour. >> >> >> >> So the question is, is it possible to show the temperature this time 24 >> hours ago, or the nearest value to 24 hours ago, if it is possible how >> would I do this. >> >> >> >> All the best. >> >> Peter >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
