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Opened 9 years ago

Closed 9 years ago

#2808 closed defect (fixed)

many items appearing only in very high zoom levels

Reported by: Cobra Owned by: ulfl
Priority: blocker Milestone:
Component: Internal mappaint style Version: latest
Keywords: Cc:

Description

After updating from rev. 1721 to rev. 1727, josm lets many items disappear when zooming out only a little bit.
Examples: (in the form "feature: approximate zoomlevel they show up the last time")

highway=footway: 10m
highway=pedestrian: 10m
highway=service: 22m
highway=residential: 43m
highway=tertiary: 27m
highway=secondary: 323m
buildings: 54m
many landuses: 54m
.... etc.

I rate this as "blocker" since this behaviuor is very annoying, leads to wrong selections and lets actually densely mapped areas look like unmapped areas. In my opinion revision 1727 isn't usable either for mapping nor for analysing existing data.

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Change History (4)

comment:1 Changed 9 years ago by stoecker

Disable the hidden option "mappaint.zoomLevelDisplay" to get the standard josm behaviour until we find a new method for these zoom settings which no longer depend on the projection as the previous variant did (which is why the settings are a bit strange now).

comment:2 Changed 9 years ago by stoecker

Component: CoreInternal mappaint style
Owner: changed from team to ulfl

Ok, I now changed the code (in r1728), so the mappaint uses the same value as is displayed in the top in zoom bar.

I do not use this option, so I cannot say what values would be right. But I think that zoom-number is the best value which we have and it is used in other places as well. This value actually means "meters / 100pixel".

Ulf, do we need to change the settings in the styles file now? I do not exactly know what values have been used previously. The code contained some assumptions about pixel size and so on.

comment:3 Changed 9 years ago by ulfl

Hmmm, don't understand. mappaint.zoomLevelDisplay is set to false as default so with normal installations there shouldn't be any problems.

Don't know about the scale handling. This feature started as an experiment a long time ago, in the meantime I'm not even sure if it would be better to simply remove the values from the style files altogether.

comment:4 Changed 9 years ago by stoecker

Resolution: fixed
Status: newclosed

Should work as before now. Maybe slightly different zoom levels.

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