Fourteen: Where does Leo linger?

Leo has been poorly. His tummy has been bad and he has been listless and he has not been eating his dinner. I’ve been worried about him and what could be making him poorly and so I thought I might see if this data – which tells us where Leo goes – might also be used to tell us where he stays. If we know where he stays then we might note if he is eating something bad somewhere or he is stopping in unusual places.

And so while I have the Leo movement data today I have also written something to tell me where he stops.

Download

It was a wet day and overcast.

First we start off which what might be bad data – Leo is all the way to the East of the map – but he seems to start running around his own back garden before heading off in a new direction South down Bullgrave Woods and towards St. Anthony’s School (Stay away Leo, I hated it!) where he heads into the large playing field behind the houses at the bottom of Crescent Walk.

He does not go as far up as “Pannies House” – the home of my mate Richard when we were kids – but he is behind that row of houses. He exits pretty quickly and works his way back to the gardens around Crescent Walk. He has an explore of the back gardens going further West than normal too.

He stops at the edge of the houses rather than going to his favourite field and then returns back to run around my garden again.

So far, so Leo, but let us look further.

First Leo went just under 5k. That is just over half his usual distance on full day tracking underlining his being not that well, or at least not himself.

Lingering

I’ve written something to find out where Leo lingers, and were he goes off tracking (into a house, for example, or under tree cover)

Some technical stuff for those interested. Lingering is when Leo’s GPS ticker – which ticks every ten seconds – reports being within the four meters according to the Long/Lat reported. If Leo has twelve ticks all within 4ms he has lingered.

If the tick is outside of four meters there is a tolerance (for bad data) but as soon as a second/third tick is outside then he is no longer considered to be lingering.

Being undercover detects when Leo’s tracker does not report for an extended period of time (around eight minutes) by subtracting the time between ticks. I’m refining the plug in and will stick it on GitHub soon.

  1. 07:53 Leo Lingers here
  2. 09:39 Leo Lingers here
  3. 09:54 Leo Lingers here
  4. 02:56 Leo Lingers here
  1. 08:01 Leo under cover for 28 minutes.

  2. 08:32 Leo under cover for 10 minutes.

  3. 09:05 Leo under cover for 6 minutes.

  4. 09:11 Leo under cover for 13 minutes.

  5. 09:56 Leo under cover for 11 minutes.

  6. 10:12 Leo under cover for 38 minutes.

  7. 10:51 Leo under cover for 30 minutes.

  8. 11:25 Leo under cover for 70 minutes.

  9. 12:36 Leo under cover for 6 minutes.

  10. 12:42 Leo under cover for 34 minutes.

  11. 01:21 Leo under cover for 5 minutes.

  12. 01:34 Leo under cover for 66 minutes.

  13. 02:41 Leo under cover for 7 minutes.

  14. 03:22 Leo under cover for 179 minutes.

If we long along the maps we see Leo hanging around in a garden, then on a road (daft Leo) and then at the corner house at the bottom of Crescent Walk. These are the locations where Leo has stopped moving long enough that he must have shown an interesting in something. His last Linger is in the bottom of the garden. Remember this is where the linger started. I linger could be being stopped, or just walking slowly or circling a point.

An improvement to the lingering would be to note how long he has lingered in a location.

If we look where he has gone under cover we see the first two are for dense tree cover. The third he seems to go under a roof (perhaps) and the forth may be similar as may the fifth. It seems that tracking drops out at a few points and it might be a good improvement to show where it comes back. I suspect that the under cover shows more the limitations of the tracker than much about the kitten.

Mystery solved

Leo is going into a neighbours house and eating biscuits and meat that has been left down for too long. Hopefully we can get him back on his own diet and he can get back to being himself.

3 thoughts on “Fourteen: Where does Leo linger?”

  1. Haha! One of ours Tigz (RIP) was a bugger for doing this, always wanted to tag him with GPS collar as he ruled the roost up this end and always wondered just how far his territory reached.

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