Because all countries are mapped with relations of type boundary... Op za 10 nov. 2018 12:12 schreef دار الآثار للنشر والتوزيع-صنعاء Dar Alathar-Yemen <hubais...@outlook.com:
> I think I did not understand you, because in https://overpass-turbo.eu/ > > Query: > > node > > [place=country]; > > out; > > > > outputs nearly all countries > > and query > > area > > [place=country] > > ; > > out; > > > > outputs only 3 countries > > > ------------------------------ > *من:* Mateusz Konieczny <matkoni...@tutanota.com> > *تم الإرسال:* Saturday, November 10, 2018 12:59:29 PM > *إلى:* Tag discussion, strategy and related tools > *الموضوع:* Re: [Tagging] رد: New rag to draw node name with rotate angle > > Can you give example of a country not > > mapped as an area and incorrectly > > mapped as a node? > > 10. Nov 2018 07:01 by hubais...@outlook.com: > > I am talking about nodes not areas or ways. Most of seas in OSM are tagged > on node element. Also countries most of them are tagged on node element > > > ------------------------------ > *من:* Kevin Kenny <kevin.b.ke...@gmail.com> > *تم الإرسال:* 01/ربيع الأول/1440 09:09 م > *إلى:* Tag discussion, strategy and related tools > *الموضوع:* Re: [Tagging] New rag to draw node name with rotate angle > > On Fri, Nov 9, 2018 at 12:06 PM دار الآثار للنشر والتوزيع-صنعاء Dar > Alathar-Yemen <hubais...@outlook.com> wrote: > > I suggest new tag to tell map render to draw the node name with a > specified rotate angle not horizontal. We need this for some seas like Red > Sea, and Suez Gulf in Egypt. > > > I have serious doubts whether encoding the rendering in the map in such a > way is a good idea. > > A renderer that wished to label an area with an angled label could readily > determine the angle for itself, by computing the principal axes of the > area, and if its eccentricity exceeds a specified value, rotating the label > to align with the major axis. > > An even better rendering could be achieved by computing the morphological > skeleton of the area, and placing the label along some smooth curve that > approximates the medial axis. > > There are also algorithms that handle curved label placement in the > presence of interfering labels, although they are somewhat less well > developed. One such is described in Mathieu BARRAULT, "A methodology for > placement and evaluation of area map labels." _Computers, Environment and > Urban Systems_ 25 (2001), pp. 33-52. > > http://geoinformatics.ntua.gr/courses/admcarto/lecture_notes/name_placement/bibliography/barrault_2001.pdf > > Barrault describes the process of choosing a family of circular arcs that > well approximate the general contour of an area feature. Figure 3 of the > paper is informative about what criteria his heuristic takes into account > for 'goodness' of placement. Figures 10 and 11 show what the algorithm > achieves on sample elongated figures and Figures 13-14 show what it can do > in the presence of interfering labels. > > To place this task on the mapper forecloses on the possibility that a > renderer can do it better. > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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