[New Page] Map tiles

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[New Page] Map tiles

Postby davielde » Mon Mar 24, 2014 2:42 am

With regard to landmarks, here is an interesting screenshot that I took today. There used to be a rather large landmark for a state recreation area covering a few tiles in addition to this one, but looking in the editor, the landmark was recently deleted either just before the freeze or perhaps in the beta editor since the freeze. In the app, this tile-sized and tile-shaped remnant exists even when I manually refresh the map data, and I can even see it on separate devices as well. In LiveMap, however, nothing appears, consistent with the landmark deletion.

Is there a chance that when a landmark is added or edited, only the tiles that actually have geometry nodes (or perhaps even just the center point of the polygon) have an update triggered? If what I have here is what I think it is, tiles simply "covered" by large landmarks are not updated when the landmark changes. There are only a few road segments in that area, and none of them have been touched since November, so nothing recently has prompted a tile update.
Image
CM: USA
SM: Michigan, Vermont
AM: Ann Arbor, MI & Thunder Bay, ON
WME Michigan
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Re: Map tiles updates for deleted landmarks

Postby davielde » Mon Mar 24, 2014 6:57 pm

dbraughlr wrote:Perhaps just deleting a landmark doesn't cause a tile update but when the landmark is immediately replaced by a new landmark covering the same tiles, there is no way to tell.

It would be worthwhile to test unless kentsmith9 or others know that this is already not the case. Lake St Clair would be a good candidate for anyone with beta editor and CM rights.
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Re: Map tiles updates for deleted landmarks

Postby dbraughlr » Mon Mar 24, 2014 6:11 pm

Perhaps just deleting a landmark doesn't cause a tile update but when the landmark is immediately replaced by a new landmark covering the same tiles, there is no way to tell.
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[New Page] Map tiles

Postby kentsmith9 » Sun Mar 23, 2014 3:44 pm

I have not yet created content for this page, but on it I believe we should cover the following:

  • Definition - Describe it briefly (probably just the into paragraph)
  • Theory of operation - Describe why they exist and how they work (at a basic level)
  • Updates - What does and does not trigger an update
  • Other?

We do know that the following do NOT cause a tile update:
  • Camera updates
Waze has stated that the following WILL cause a tile update in the area of the segment being edited:
  • Turn Restrictions
  • Elevation
  • Lock levels
Since turn restrictions do not change editor, our initial assumption was incorrect that only mods that change the editor name would update the tiles.

I have a pending question asking about whether the following also trigger an update:
  • Adding or editing House Numbers
  • Changes to Street/Alternate/City/State name
  • Adding toll indicator
  • Geometry changes to a segment
  • Adding a new road through WME
  • Adding a new road by paving in the client
  • Adding or editing a landmark

I am awaiting their reply on this list so we can move it to the Wiki.
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Re: [New Page] Map tiles

Postby kentsmith9 » Sun Mar 23, 2014 5:32 pm

I put a bit of what we know so far into [[Map tiles]]. Anyone is welcome to add more information as it is determined.
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Re: [New Page] Map tiles

Postby kentsmith9 » Sun Mar 23, 2014 7:18 pm

sketch wrote:I'm confident that geometry, street name, and landmark changes will trigger tile updates. I've heard suspicions that time-based segment restrictions will not.

Good feedback. I assume your confidence on "street name" is based on actual map field (yours or someone else) testing. I am curious because I was thinking at one point I tried changing the name fields of a road and that did not trigger the update, but it did not make sense to me. So if you know that change alone will trigger the update, I am good with that.

For landmark changes, are you grouping 1) geometry changes, 2) entire landmark shifting, and 3) any edits to the name fields as all individually able to trigger a tile update?

Since the landmarks are on a different layer than roads, do we "know" any layer change that triggers a tile update will update all layers?
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Re: [New Page] Map tiles

Postby kentsmith9 » Mon Mar 24, 2014 5:03 am

Doesn't seem likely. We were doing some edits on landmarks so huge it would take seconds to render the image each time we edited it. I swapped out a landmark with too many geo nodes for the Grand Canyon and drew in a new one. There are no roads in the area, so only the landmark itself could have caused all those tiles to update.

I think you may have run into an anomaly.
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Re: Map tiles updates for deleted landmarks

Postby kentsmith9 » Mon Mar 24, 2014 7:17 pm

davielde wrote:It would be worthwhile to test unless kentsmith9 or others know that this is already not the case. Lake St Clair would be a good candidate for anyone with beta editor and CM rights.

I have no specific data on that, so it might be worth testing. I am still waiting on feedback from the Devs on the questions, but their schedule is "soon." :lol:
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Re: [New Page] Map tiles

Postby kentsmith9 » Tue Mar 25, 2014 10:55 pm

I look forward to those test results.

sketch wrote:This is harder to test with any certainty now that the 10% tile update process has been implemented (right?).

I am not familiar with this. Is there a thread on this? I could not find anything. It sounds like something we should get added to the Wiki though.
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Re: [New Page] Map tiles

Postby kentsmith9 » Wed Mar 26, 2014 12:55 am

Ah. I hope that is the case as it would at least solve all update problems within 10 updates. If someone remembers that thread or details and can comment here, I can add it to this Wiki page.

To isolate that condition from the test, would it be possible to repeat your same list of test locations immediately after they update? Then if they take 10 days to update again, we know the answer.
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