Directional Alerts

[Kremmen]

I need to get my headround this:

[M8TJT]

Where did that lot come from K?

[Kremmen]

Found it on a website.

He seems to be saying that if the target is created in Mapsource rather than a fixed lat/long then you can put a small radius on the target.

Then, if you plot a route that goes through that target 'circle' you will get a warning, else not. So if the circle only covers one side of the road ......

What I need is to see the file created by Mapsource for a single waypoint with a 30 metre circle at a zoom level of 20 meters. Then try to figure out how it gets a second proximity for the alert distance.
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

[pcaouolte]

I did quite a bit of work on this some time ago to try to get directional warnings to work. I ran out of time to play before I got it to work.

From memory, you want a big circle around the camera and a small circle inside the big circle. If you hit the small circle before you get to the camera you get a warning. If you pass the camera before you get to the small circle then there is no warning.

The big circle around the camera defines the warning distance because the small circle must be entirely within the big circle or no warning will be generated.

The small circle needs to sit over the approach road to the camera. Positioning this automatically can be a problem when there is a curve in the road before the camera.
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Paul

[Kremmen]

Thanks

I've found that Cyclops use the Garmin Content Toolkit. That has a module called 'GPI Creator'.
That uses XML, not GPX, and uses a double circle as you say.
The XML has a POI section and an Alert Circle section.

If I can see what Mapsource is producing there may be a way of writing it from what's in the CSV file, but, the lat/long would have to be very accurate.
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

[pcaouolte]

When I was looking at it I wasn't aware that Mapsource could produce anything that might work. I expected that I would have to write an app to build the GPI file directly (as a replacement for POILoader). That was going to be a lot of work.

It will be interesting to see what you get from Mapsource.

I also think that the Garmin can cope with several smaller circles inside the large circle. They can overlap each other. That reduces the need for accuracy as you only need to cross one of the small circles to get the warning.
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Paul

[Kremmen]

I think a winter project. Assuming Mapsource is still available.

Just a local camera or 2 to test it but trying to place the small circle optimally based on the CSV lat/long could be tricky.
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

[pcaouolte]

It gets complicated. If the camera is near a roundabout you could be trying to cover several approach routes to a single camera. Some of these approaches could be almost a U turn onto the road with the camera (think first exit off a roundabout with more than 4 exits). Whilst this may seem an unlikely position for a camera it is sometimes the start position for a Specs zone.

The longer the warning time the bigger the large circle needs to be and the more small circles you need to avoid the chance that you drive between them without getting warned.
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Paul

[dales]

MapSource IS available.

I've sent you a pm describing whereabouts.

Dales.

PS the camera .gpx's load straight up in MapSource as they do in BaseCamp, and show on the map with their proximty circles.
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nuvi 2599LMT-D, oregon 700, basecamp, memory-map.

[Kremmen]

Got it thanks.

I doubt this will be in production but I want to see if I can at least get a simple directional alert on a straight bit of road as a first step.

I've found a bit of XML code that is allegedly how Cyclops do it but the XML code needs the Garmin Content Toolkit which at $500 a year isn't worth it.

If this ploy, which works through POIloader, and looks very similar to the XML scenario.....
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

[MaFt]

Hmm, could be interesting.

But how would you automate where the small circle would be? For a longer alert time you could be 50-100m away from the camera and the road's heading could change a lot in that distance.

Depending on the alert time the small circle could have lots of different positions in order to stay on the road itself.

I'm thinking a task like this would need a helluva lot of manual work to place various points leading up to the cameras for suitable locations for small circles.

Motorway cameras (70mph and variable speed) could be fairly easy to automate though as at those speeds it is likely to be a fairly straight bit of road. That's for the UK anyway.

I'm wondering if it's worth starting work on an 'add-on' database with the warning locations added per camera. It could be available to you guys for the GPX converter (probably with a signed agreement that the data is only used for that and not shared etc) and integrated into CamerAlert.

I'll have a think about how it could be done and see what the directors say.

[Kremmen]

Exactly, but I'm going to investigate to see what gives.

What Cyclops seem to do is have 2 files. One is the one like we have with the lat/long and the other is the alert circle.

Leave it with me until I say "well that was a waste of time"

Not sure if this will be big enough to view but this seems to be the basis of the Cyclops XML file that the Toolkit works with:



The CustomAudio does't work, but we know that because Cyclops is just a bong.
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

[Kremmen]

I can't figure out Mapsource. My 2 Garmins are too new so they aren't recognised to offload the maps.

I can import routes tracks and saved places via Basecamp but no use without speedcam data.

I'll have another go in the week but not looking good.
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

[sussamb]

If you want MapSource to work with newer devices you must set them to mass storage mode as MS won't recognise mtp devices ;)
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Where there's a will ... there's a way.

[Kremmen]

Ah right, ta
_________________
Satnav:
Garmin DS61 LMT-D (Indoor test rig)
Garmin 2599 LMT-D (Indoor test rig 2)
DashCam:
Viofo A119 V3

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