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some city names are rendered on one tile only #1822

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openstreetmap-trac opened this issue Jul 23, 2021 · 3 comments
Closed

some city names are rendered on one tile only #1822

openstreetmap-trac opened this issue Jul 23, 2021 · 3 comments

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@openstreetmap-trac
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Reporter: snakeru[at]gmail.com
[Submitted to the original trac issue database at 8.55am, Wednesday, 13th May 2009]

Here you can see the effect:
http://www.openstreetmap.org/?lat=56.28&lon=43.85&zoom=6&layers=0B00FTF
[[BR]] There are three cities: "" (Zavolzhie = Z), "" (Dzerzhinsk = D) and " " (Nizhnij Novgorod = NN).
[[BR]]At zoom level 6 there is name of Z visible and A_TAIL of NN name (this ticket's bug).
[[BR]]At zoom level 7 only D name is visible (I'm going to open another ticket for missing Z name)
[[BR]]At zoom level 8 only Z and NN names are visible
[[BR]]At zoom level 9 finally all three are correctly rendered.

@openstreetmap-trac
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Author: snakeru[at]gmail.com
[Added to the original trac issue at 12.06pm, Wednesday, 13th May 2009]

don't forget to switch to osmarenderer mode

@openstreetmap-trac
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Author: spaetz
[Added to the original trac issue at 12.37pm, Wednesday, 30th June 2010]

Yep, that is a major deficiency with the label suppression algorithm. It essentially suppresses labels at random and on 2 neighboring tiles it can decide to suppress different cities which leads to that output. Solving that would require improvements in or/p. If there are any takers for that I would be very grateful.

@openstreetmap-trac
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Author: iandees
[Added to the original trac issue at 9.02pm, Monday, 9th September 2013]

Cleaning aging tickets.

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