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<span style="color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Feature Proposal - RFC - key:spacing=*</span><br clear="all"><div><br></div><div><a href="https://wiki.openstreetmap.org/wiki/Proposed_features/Key:spacing%3D*">https://wiki.openstreetmap.org/wiki/Proposed_features/Key:spacing%3D*</a><br></div><div><br></div><div>According to <a href="https://wiki.openstreetmap.org/wiki/Proposal_process#Proposed">Proposal Process</a>:</div><div>

<ul style="list-style-type:disc;margin:0.3em 0px 0px 1.6em;padding:0px;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><li style="margin-bottom:0.1em">Please discuss each proposed feature on its own discussion page.</li></ul>

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<p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Proposed feauture is a new key:<b>spacing=*</b><span> </span>to indicate estimated average spacing (or it's counterpart: density), of objects along a way or on an area.</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">The key is proposed as part of a rendering proposal for<span> </span><b>natural=tree_row</b>, but it's easy to see how it can be applied to any case where objects are more or less grouped or arranged together with a kind of regularity. In that respect spacing=* is a general purpose dimension tag like height, width, length and ele.</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">However, the proposed usage is explicitly non-exact: think of the spacing of trees in a tree_row or in a forest, or a barrier consisting of lengths of fence between poles. These objects are often described verbally as "very dense", "a tree every 10 feet" or "widely spaced, about 50 meters apart".</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">So the goal is to give an indication of the spatial distribution along the way or over the area, rather than an exact measurement of distances between separate actual objects. If exact positions are required for all or some of the trees in a row, these trees should be individually mapped and tagged as natural=tree. (The individual nodes may be attached to the tree_row way, which provides an easy method for aligning tree nodes within a row, but you need to tag them separately.)</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">That way you don't need to worry about the dimension or shape of single objects, or that in fact some are 9 m apart and others are 11 m apart. Measurement is simple: take a sample length of the way divided by the number of sections (= #objects minus one). For people who think exact: picture a grid where every point is N m apart from it's neighbours, then objects are placed on or near the grid points.</p>



<h2 style="color:rgb(0,0,0);background:none rgb(255,255,255);font-weight:normal;margin:1em 0px 0.25em;overflow:hidden;padding:0px;border-bottom:1px solid rgb(162,169,177);font-size:1.5em;font-family:"Linux Libertine",Georgia,Times,serif;line-height:1.3;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><span class="gmail-mw-headline" id="gmail-Tagging">Tagging</span><span class="gmail-mw-editsection" style="font-size:small;font-weight:normal;margin-left:1em;vertical-align:baseline;line-height:1em;display:inline-block;font-family:sans-serif;white-space:nowrap;unicode-bidi:isolate"><span class="gmail-mw-editsection-bracket" style="margin-right:0.25em;color:rgb(85,85,85)">[</span><a href="https://wiki.openstreetmap.org/w/index.php?title=Proposed_features/Key:spacing%3D*&veaction=edit&section=4" class="gmail-mw-editsection-visualeditor" title="Deelpagina bewerken: Tagging" style="text-decoration:none;color:rgb(11,0,128);background:none">bewerken</a><span class="gmail-mw-editsection-divider" style="color:rgb(85,85,85)"><span> </span>|<span> </span></span><a href="https://wiki.openstreetmap.org/w/index.php?title=Proposed_features/Key:spacing%3D*&action=edit&section=4" title="Deelpagina bewerken: Tagging" style="text-decoration:none;color:rgb(11,0,128);background:none">brontekst bewerken</a><span class="gmail-mw-editsection-bracket" style="margin-left:0.25em;color:rgb(85,85,85)">]</span></span></h2><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><b>spacing=N</b><span> </span>where N is average space between points representing objects (e.g. average heart-to-heart distance between trees)</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">units are in m unless otherwise specified (N u).</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Use with natural=tree_row, natural=wood, landuse=forest, landuse=orchard, natural=scrub, barrier=hedge, or any other way or surface with more or less regularly spaced objects.</p><p style="margin:0.5em 0px;line-height:inherit;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Note that the key gives spacing for the whole way or area. It is not an attribute of the objects themselves and does not imply exact placement of the objects.</p><h2 style="color:rgb(0,0,0);background:none rgb(255,255,255);font-weight:normal;margin:1em 0px 0.25em;overflow:hidden;padding:0px;border-bottom:1px solid rgb(162,169,177);font-size:1.5em;font-family:"Linux Libertine",Georgia,Times,serif;line-height:1.3;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><span class="gmail-mw-headline" id="gmail-Applies_to">Applies to</span><span class="gmail-mw-editsection" style="font-size:small;font-weight:normal;margin-left:1em;vertical-align:baseline;line-height:1em;display:inline-block;font-family:sans-serif;white-space:nowrap;unicode-bidi:isolate"><span class="gmail-mw-editsection-bracket" style="margin-right:0.25em;color:rgb(85,85,85)">[</span><a href="https://wiki.openstreetmap.org/w/index.php?title=Proposed_features/Key:spacing%3D*&veaction=edit&section=5" class="gmail-mw-editsection-visualeditor" title="Deelpagina bewerken: Applies to" style="text-decoration:none;color:rgb(11,0,128);background:none">bewerken</a><span class="gmail-mw-editsection-divider" style="color:rgb(85,85,85)"><span> </span>|<span> </span></span><a href="https://wiki.openstreetmap.org/w/index.php?title=Proposed_features/Key:spacing%3D*&action=edit&section=5" title="Deelpagina bewerken: Applies to" style="text-decoration:none;color:rgb(11,0,128);background:none">brontekst bewerken</a><span class="gmail-mw-editsection-bracket" style="margin-left:0.25em;color:rgb(85,85,85)">]</span></span></h2><ul style="list-style-type:disc;margin:0.3em 0px 0px 1.6em;padding:0px;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><li style="margin-bottom:0.1em">linear ways representing a loosely or densely spaced row of objects, exemplified by a tree_row. Other examples: a row of bollards, a row of stepping stones to cross a waterway, a row of street lights.</li></ul><ul style="list-style-type:disc;margin:0.3em 0px 0px 1.6em;padding:0px;color:rgb(34,34,34);font-family:sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><li style="margin-bottom:0.1em">areas representing a surface loosely or densely covered with objects, exemplified by a forest or an orchard.</li></ul>

<br></div>-- <br><div class="gmail_signature">Vr gr Peter Elderson</div>
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