On Tuesday, March 12, 2019 at 5:04:16 PM UTC-4, V. Kelly Bellis wrote:
>
> I was wondering if there might be any documentation written for
> non-programmers in how weewx and XTide have been integrated?
>
the forecast extension invokes xtide, parses the output, then stores the
result in the forecast database. the results can then be combined with
other forecast data when generating reports.
by default, the forecast extension will invoke /usr/bin/tide
if your 'tide' program is located somewhere else, you can tell the
extension to find it like this:
[Forecast]
[[XTide]]
prog = /path/to/tide
location = Boston
as for the tide location, you must test that directly with tide. once you
have a string that works, use that string as the 'location' parameter for
the forecast extension. if the location has commas or spaces then put it
in quotes.
btw, this spring i'm hoping to have some students put together a guide for
how to create your own harmonics from your own data. we have been using
maxbotix ultrasonic sensors on raspberry pi running weewx to collect tide
data from a couple of islands in maine. apparently you can create your own
harmonics with 6-9 months of data (the data we have so far tracks the xtide
predictions for tenants harbor and camden pretty well, but there are
offsets in magnitude and phase). its been a bit of a struggle - power
outages, snow on solar panels, critters chewing through cables,
seawater/corrosion. but we'll get there...
m
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