Lost AIS with Upgrade to V4

[FlyingDiver]

Have you confirmed that the system time on the Mac mini is correct?

[barnakiel]

Interesting.

Should they not be validated against GPS time stamp rather than local machine time stamp?

Possibly a bug to be discussed with the builder.

b.

[gdavids]

I'm glad that "fix" worked for you. Now you just need to figure out why your system thinks the targets are old the moment they get painted on the screen. For me it had something to do with the change to daylight savings, and by the next morning it was fine again. I do not know how the program works in this regard, but I would check to see if the clock on your computer is matching the local GPS time.

Perhaps someone who really knows how this works could shed some further light.

Greg

[FlyingDiver]

Originally Posted by barnakiel

Interesting.

Should they not be validated against GPS time stamp rather than local machine time stamp?

Possibly a bug to be discussed with the builder.

b.

As a Mac developer, I would say no. Using multiple time sources is asking for trouble. Nothing in this requires an ultra-accurate clock, so using system time should be sufficient. Implementing a GPS module that updates the system time to match the GPS time would be a good feature, but it should not be required.

[myocean]

At least with the old OpenCPN version time was never an issue.
I have now changed the OS X time zone (not time itself) so it is matching with my location (New Zealand) and indeed - the remove options don't cause a problem anymore. But switching back to the "wrong" time zone (gmt+1) does not reproduce the original problem. Somehow contacts seem to be less consitent though - disappearing from time to time...(???)