[aprssig] Track Playback: easy date/time lookups on aprs.fi

[Heikki Hannikainen]

On Wed, 21 Sep 2011, Bob Burns W9RXR wrote:

> At 01:29 AM 9/20/2011, Heikki Hannikainen wrote:
>
>> Could you please try again, and let me know exactly which error message are 
>> you getting? It seems to work for me currently.
>
> I'm trying to export MSSAGB-1 from 2011-09-10 06:00:00 to 2011-09-10 18:00:00 
> with KMZ/Google Earth selected. This is the error message:
>
> "Database query failed while looking up xmljs loc data."
>
> Am I going too far back in time?
>
> My recollection is that a CSV export using the same parameters works OK.
>
> If I try to export W9RXR-8 from 2011-09-20 00:00:00 to 2011-09-21 00:00:00 
> with KMZ/Google Earth selected, it works fine.

I successfully downloaded MSSAGB-1 from 2011-09-10 06:00:00 to 2011-09-10 
18:00:00 with KMZ/Google Earth selected, nothing wrong with that. You can 
export data from last year just fine.

But seems like there's another bug. If you change the date/time selection 
on top, and then click Export on the bottom (without clicking Search at 
the top), it will use the time range that was selected when you last 
clicked Search. The export is done with the Start/End dates shown above 
the format selector, and they only change when you click Search.

If there is no data found in the searched time range (it says Positions 
stored: 0), the Export button will fail with the given error message.

I'll fix it to give a more meaningful error message if there is no data to 
be exported. I should also improve the usability of the user interface, 
apparently it can be a bit confusing. Changing the dates/times on top 
should probably immediately be applied and a new search done for the 
positions to export.

   - Hessu