Hi Hal, and thanks for that. In my case at least there's no problem with making plots from live data as Lady Heather will do that for me, it's just the time taken to collect the data for each plot that could be an issue.
I'd just been wondering aloud whether any of the online simulations for instantaneous plots against location could be persuaded to quickly build a longer term prediction, but then it occured to me that as I was looking to break the rules anyway the chances of that might be quite small:-) Nigel, GM8PZR It's not hard to make your own plots. This is from 66 38' north. http://users.megapathdsl.net/~hmurray/time-nuts/Arctic/Polar-A.png If anybody wants to play, I'll put the code on the web. There are several steps. First is to collect the data. I have a python script that grabs everything from a NMEA device and logs each line with a time stamp. The GPS orbit period is 12 hours so you need 12 hours of data to see everything. But there are 30 satellites, so a few hours will show the hole. The next step is to extract the data into a useful format. That's another python script. Then, just feed that to gunplot. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
