(2020-08-16, 10:07 AM)PaddyB Wrote: Could you explain a bit more what you want to do?
What does 'prioritize'mean?
What extra 'sentences'? NMEA? Where do they come from?
From the Help docs:
What is Signal K Filter?[url=https://openplotter.readthedocs.io/en/latest/skfilter/SKfilter_app.html#what-is-signal-k-filter][/url]
The Signal K server wants to get all data it gets.
Why should we filter Signal K?
- Some devices send data which are everytime wrong (You can’t disable unwanted sentences on a nmea 2000 bus, or a defective water temp sensor in the log on nmea 0183, or …)
- You have a backup device (A second GPS or AIS)
If you zoom your nautical chart, your boat will constantly zigzag. Or one GPS has a bad reception.
The Signal K path will be identical but not the source.
The typical way would be to deside for every path which source you want to have. As long as you are able to make this decision everything is fine. (When you start converting nmea 2000 to nmea 0183 or the other way. Is there a chance to say only convert the Signal K path from a special source? No.
There are enough reasons to filter the data before it gets into the Signal K server.
There are two ways to filter.
In OpenPlotter SKfilter the page:
- Filter is the hard way. Only Signal K pathes witch match the criteria come to the server.
- Priority is the smooth way to filter. The criteria are the same, but if there is no communication within a time limit (timeout) that meets the criteria, any source for that Signal K path comes to the Signal K server. This is a kind of fallback functionality