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prushforth
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Add projection attribute and values
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‎spec/index.html‎

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@@ -286,6 +286,7 @@ <h5 id="the-map-element"><em><span class="secno">4.1</span> The <dfn><code>map</
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<dd id="attr-map-zoom"><em><code><a href="#attr-map-zoom">zoom</a></code> - a positive integer zoom (scale) value</em></dd>
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<dd id="attr-map-lat"><em><code><a href="#attr-map-lat">lat</a></code> - a decimal WGS84 latitude value for the map center</em></dd>
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<dd id="attr-map-lon"><em><code><a href="#attr-map-lon">lon</a></code> - a decimal WGS84 longitude value for the map center</em></dd>
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<dd id="attr-map-projection"><em><code><a href="#attr-map-projection">projection</a></code> - a string <a href="#projections">identifier</a> of the MapML coordinate reference system used by the map. Default is 'OSMTILE'.</em></dd>
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<dd id="attr-map-width"><em><code><a href="http://www.w3.org/TR/2014/REC-html5-20141028/embedded-content-0.html#attr-dim-width">width</a></code> - Horizontal dimension</em></dd>
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<dd id="attr-map-height"><em><code><a href="http://www.w3.org/TR/2014/REC-html5-20141028/embedded-content-0.html#attr-dim-height">height</a></code> - Vertical dimension</em></dd>
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<dt><span>Tag omission in text/html</span>:</dt>
@@ -301,6 +302,7 @@ <h5 id="the-map-element"><em><span class="secno">4.1</span> The <dfn><code>map</
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<em> readonly attribute unsigned long <a href="#attr-map-zoom">zoom</a>;</em>
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<em> readonly attribute double <a href="#attr-map-lat">lat</a>;</em>
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<em> readonly attribute double <a href="#attr-map-lon">lon</a>;</em>
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<em> readonly attribute string <a href="#attr-map-projection">projection</a>;</em>
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<em> readonly attribute unsigned long <a href="#attr-map-width">width</a>;</em>
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<em> readonly attribute unsigned long <a href="#attr-map-height">height</a>;</em>
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};</pre>
@@ -325,7 +327,7 @@ <h5 id="the-layer-element"><em><span class="secno">4.1.1</span> The <dfn><code>l
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<dd id="attr-layer-label"></dd>
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<dd id="attr-layer-src"></dd>
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<dt><span>Tag omission in text/html</span>:</dt>
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<dd>Neither tag is omissible</dd>
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<dd>No end tag</dd>
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<dt>Allowed <a href="http://www.w3.org/TR/2014/REC-html5-20141028/dom.html#aria-role-attribute">ARIA role attribute</a> values:</dt>
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<dd>None</dd>
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<dt>Allowed <a href="http://www.w3.org/TR/2014/REC-html5-20141028/dom.html#state-and-property-attributes">ARIA state and property attributes</a>:</dt>
@@ -338,6 +340,173 @@ <h5 id="the-layer-element"><em><span class="secno">4.1.1</span> The <dfn><code>l
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};</pre>
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</dd>
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</dl>
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<h4 id="projections"><span class="secno">4.1.2 </span>Projection identifiers</h4>
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<p>The following table summarizes the <a href="#attr-map-projection"><code>projection</code></a> identifier values that are defined by this specification.</p>
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<table>
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<thead>
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<tr>
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<th>Projection value</th>
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<th>Description</th>
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<th>Base CRS / Projection system</th>
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<th>Origin (x,y)</th>
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<th>Tile row/column size (px)</th>
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<th>Projected Bounds / LatLng Bounds</th>
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<th>Zoom level</th>
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<th>Resolution</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><code>OSMTILE</code></td>
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<td>Default value of the <a href="#attr-map-projection">projection</a> attribute. Web Mercator-based tiled coordinate reference system.</td>
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<td><code>EPSG::3857 / Spherical Mercator</code></td>
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<td>-20037508.342787, 20037508.342787</td>
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<td>256/256</td>
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<td>LatLng(-85.0511287798,-180), LatLng(85.0511287798,180)</td>
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<td> 0<br>
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1<br>
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</td>
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<td> 156543.0339<br>
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78271.51695<br>
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39135.758475<br>
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19567.8792375<br>
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9783.93961875<br>
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4891.969809375<br>
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2445.9849046875<br>
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1222.9924523438<br>
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611.49622617188<br>
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305.74811308594<br>
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152.87405654297<br>
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76.437028271484<br>
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38.218514135742<br>
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19.109257067871<br>
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9.5546285339355<br>
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4.7773142669678<br>
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2.3886571334839<br>
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1.1943285667419<br>
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0.59716428337097<br>
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</td>
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</tr>
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<tr>
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<td><code>CBMTILE</code></td>
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<td>Lambert Conformal Conic-based tiled coordinate reference system for Canada.</td>
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<td><code>EPSG::3978 / Lambert Conformal Conic</code></td>
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<td>-34655800, 39310000</td>
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<td>256/256</td>
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<td>-7786476.885838887, -5153821.09213678, 7148753.233541353, 7928343.534071138</td>
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<td>0<br>
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<td> 38364.660062653464<br>
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22489.62831258996<br>
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13229.193125052918<br>
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7937.5158750317505<br>
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4630.2175937685215<br>
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2645.8386250105837<br>
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1587.5031750063501<br>
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926.0435187537042<br>
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529.1677250021168<br>
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317.50063500127004<br>
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185.20870375074085<br>
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111.12522225044451<br>
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66.1459656252646<br>
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38.36466006265346<br>
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22.48962831258996<br>
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13.229193125052918<br>
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7.9375158750317505<br>
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4.6302175937685215<br>
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</td>
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</tr>
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<tr>
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<td><code>APSTILE</code></td>
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<td>Alaska Polar Stereographic-based tiled coordinate reference system for the Arctic region.</td>
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<td><code>EPSG::5936 / Polar Stereographic</code></td>
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<td>-28567784.109255, 32567784.109255</td>
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<td>256/256</td>
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<td>-28567784.109254867, -28567784.109254755, 32567784.109255023, 32567784.10925506</td>
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<td>
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0<br>
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<td> 238810.813354<br>
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119405.406677<br>
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59702.7033384999<br>
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29851.3516692501<br>
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14925.675834625<br>
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7462.83791731252<br>
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3731.41895865639<br>
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1865.70947932806<br>
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932.854739664032<br>
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466.427369832148<br>
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233.213684916074<br>
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116.606842458037<br>
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58.3034212288862<br>
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29.1517106145754<br>
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14.5758553072877<br>
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7.28792765351156<br>
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3.64396382688807<br>
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1.82198191331174<br>
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0.910990956788164<br>
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0.45549547826179<br>
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</td>
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</tr>
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</tbody>
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</table>
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<h4 id="web-maps"><span class="secno">4.2 </span>Web maps</h4>
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<div class="impl">

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