[Qgis-user] Tracking data in QGIS

[.]

On 6/17/2013 2:23 PM, Anita Graser wrote:
> Hi Hans,
>
> Sub-seconds should be supported using the YYYY-MM-DD HH:MM:SS.ssssss 
> format.
> https://github.com/anitagraser/TimeManager
>
> Best wishes,
> Anita
>
>
> Am 17.06.2013, 20:25 Uhr, schrieb Hans Skov-Petersen <hsp at life.ku.dk>:
>
>> Dear Lene and Vincent,
>>
>> thanks guys. I'll look into Timemanager. It seems like being able to 
>> do the trick.
>>
>> I am working on points, not lines. But it seems like exactly what 
>> TimeManager handles best.
>>
>> Would you or anyone happen to know if TimeManager can handle time 
>> down to sub-seconds? I am fully aware that standard dbf date-formates 
>> do not hand shorter periods of time than a second (but Python for 
>> instance via DataTime does).
>>
>> The reason for my question is that we have some tracking points 
>> sequences recorded at 1/30'th of a second.
>>
>> Cheers
>> Hans
>> ________________________________
>> From: Lene Fischer
>> Sent: Monday, June 17, 2013 19:14
>> To: Hans Skov-Petersen; qgis-user at lists.osgeo.org
>> Subject: SV: Tracking data in QGIS
>>
>> Hi Hans,
>> Try to look at Anita Grasers blog 
>> http://anitagraser.com/2013/05/20/timemanager-in-qgis-2-0/ 
>> Tmiemanager in QGIS 2.0
>>
>> You also has the possibility to put data into at database. as Vincent 
>> suggest.
>> If you are new in QGIS - feel free to join our seminar in Nødebo at 
>> june 20.
>> http://qgis.dk/news/brugermoede2013.html
>>
>> Regards
>> Lene Fischer
>> ________________________________
>> Fra: qgis-user-bounces at lists.osgeo.org 
>> [qgis-user-bounces at lists.osgeo.org] på vegne af Hans Skov-Petersen 
>> [hsp at life.ku.dk]
>> Sendt: 17. juni 2013 18:33
>> Til: qgis-user at lists.osgeo.org
>> Emne: [Qgis-user] Tracking data in QGIS
>>
>> Hi all of you,
>>
>> I am quite new to QGIS – I know how to run it but has no indebt 
>> knowledge about the internals of the system.
>>
>> Anyway, I am looking for options enabling me to 
>> analyse/display/replay tracks of multiple individuals over time. So 
>> it’s not only for a single person – like the GPS tracking tool – it 
>> is several people I need to handle concurrently.
>>
>> Any one?
>>
>> Hans
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"Anyway, I am looking for options enabling me to analyse/display/replay 
tracks of multiple individuals over time."

Yes, it will accommodate several different data tables at the same time, 
however it seems that gradually the project file gets corrupted and all 
the Time Manager layers have to be reloaded. Sometimes the layer 
definitions need to be reloaded from the data base to make it work again.

The trick to making it work seems to be to turn off the Time Manager 
whenever you save the project file. For some reason the layer's 
attribute listing seem to lose track of all the data and only remembers 
the one entry that the Time Manager is set to when the project file is 
saved. The result is a layer listing that shows only one data point in 
the attribute table.

It's a little alarming at first to think all your data is missing, but 
if you delete the messed up layer and re-add it from your data source it 
will all reload. Of course you will have to redo all your symbol 
definitions and decorations. But I have complete confidence that Anita 
will correct all the bugs in a future release.

I currently have about two dozen different data tables incrementing in 
one minute intervals. Pretty neat.

-- 
Stay Frosty!

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