[Tagging] Basic cartography features missing, why?

Tomas Straupis tomasstraupis at gmail.com
Sat Nov 7 06:52:34 UTC 2020


2020-11-07, št, 00:41 Anders Torger rašė:
> However, how important is it that update of the map is immediate for every database update? <...>

  OSM-Carto is a style whose purpose is to visualise OSM data to
MAPPERS, do it quickly (fast feedback is essential). OSM-Carto also
has a requirement to be easily deployable by almost anybody on any
hardware. This means that pre-processing of data is impossible as per
requirements (not a design decision). And without pre-processing it is
impossible to have a cartographically sound map. So even while the
OSM-Carto team is doing a terrific job and they do have people with
good cartographic knowledge (like Christopher), but OSM-Carto does not
have such a purpose - cartography.

  We're playing around with a small project striving to comply with
cartographic rules - topo.openmap.lt - some data is updated daily,
generalisation is done weekly. But you already get generalised roads,
buildings, smart lines for waterbody labels as well as text size and
letter spacing. This should get cartographic simplification for
waterways this coming spring (not DP or VW, but Wang-Müller). So this
can be done, but OSM-Carto is not the place to do it.

  Therefore if you want to have a cartographically sound map - you
will need a separate project - separate rendering and stuff. You're
totally right - for general (not mapper) use, minutely update is less
important than cartographically correct representation. And also not
everything has to be generalised, some parts could be updated very
fast, some could be updated weekly or even monthly. Segmentation of
data could also get more attention (re-calculating only the parts
which need re-creation). Such tasks could even push forward topics
which are currently the target of generalisation and multiple
representation group of International cartographic association - I
really think OpenStreetMap has people and capabilities to have a say
there.

-- 
Tomas



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