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 <mailto: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
> <mailto: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 <mailto: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
>
> <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.
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