Depth Source

[SCarns]

My enviroment.depth.belowSurface is calculated through derived-data. If I use this as the data source for Tide_Watch, I get an error in the log and it doesn't work. If I switch to environment.depth.belowTransducer (an actual value from the N2K network), the TypeError goes away. Obviously using the "belowSurface", even though it's a calculated value, would be more accurate. Here's the log:

Oct 08 09:53:19 TypeError: Cannot read property 'type' of undefined at evtDepthVal.evtDepth.filter.dbs (/home/pi/.signalk/node_modules/signalk-tide-watch/index.js:54:63) at Next.filter (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:926:10) at Dispatcher._handleEvent (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:2057:17) at Dispatcher.handleEvent (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:1265:17) at Object.sink (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:242:17) at Dispatcher.pushToSubscriptions (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:1223:23) at Dispatcher.pushIt (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:1245:10) at Object.inTransaction (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:430:16) at Dispatcher.push (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:1214:24) at Dispatcher.handleEvent (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:1267:17) at Bus.sink (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:242:17) at Bus.push (/usr/lib/node_modules/signalk-server/node_modules/baconjs/dist/Bacon.js:2371:21) at StreamBundle.push (/usr/lib/node_modules/signalk-server/lib/streambundle.js:92:31) at paths.forEach.path (/usr/lib/node_modules/signalk-server/lib/streambundle.js:46:34) at Array.forEach () at StreamBundle.update.values.forEach.pathValue (/usr/lib/node_modules/signalk-server/lib/streambundle.js:45:31) at Array.forEach () at StreamBundle.delta.updates.forEach.update (/usr/lib/node_modules/signalk-server/lib/streambundle.js:35:35) at Array.forEach () at StreamBundle.pushDelta (/usr/lib/node_modules/signalk-server/lib/streambundle.js:33:27) at FullSignalK.emit (events.js:203:15) at FullSignalK.addDelta (/usr/lib/node_modules/signalk-server/node_modules/@signalk/signalk-schema/dist/fullsignalk.js:52:8)

[itemir]

I have the same problem.

[SCarns]

I don't have this issue anymore, so I assume it's been fixed. However, the tide predictions are all wrong. I feel as this happened with the last update, but I'm unsure.

[itemir]

Strange, I just installed it this morning for the first time and it doesn't work with environment.depth.belowSurface (comes from derived-data) but it works with environment.depth.belowTransducer (comes from NMEA 2000).

Do you have anything in your Depth source Type filter and Depth source Talker filter? And what version are you using?

[itemir]

Digging into this a bit more, looks like the updates coming from NMEA and derived-data are slightly different:

NMEA 2000: Jan 23 09:31:09 2022-01-23T17:31:09.649Z signalk-debug {"context":"vessels.urn:mrn:imo:mmsi:367744020","updates":[{"source":{"label":"PiCAN-M","type":"NMEA2000","pgn":128267,"src":"105","deviceInstance":32},"$source":"PiCAN-M.105","timestamp":"2022-01-23T17:31:09.551Z","values":[{"path":"environment.depth.belowTransducer","value":20.06}]}]}

derived-data: Jan 23 09:31:10 2022-01-23T17:31:10.672Z signalk-debug {"context":"vessels.urn:mrn:imo:mmsi:367744020","updates":[{"$source":"derived-data","timestamp":"2022-01-23T17:31:10.615Z","values":[{"path":"environment.depth.belowSurface","value":20.553}]}]}

Source key is missing in derived-data, wondering if it is what messes up things when combined with the filter:

this.evtDepthVal = this.evtDepth .filter(dbs => { return this.wildcardEq(dbs.source.type, this.options.depthSourceType) && this.wildcardEq(dbs.source.talker, this.options.depthSourceTalker); } ) .map(".value");

[SCarns]

No “Types” specified. I’m on a new installation now, as I’m between boats - getting set up for the next one. I don’t yet have any NMEA data yet, but I am simulating the whole set up and it doesn’t work again. Since depth.belowSurface is the default value and that value will always be a calculated value as an offset of depth.belowTransducer, it shouldn’t require those types to function properly.