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    <title>topic ArcGIS.com Map - Adding a Tile Layer in non-mercator projection in ArcGIS Online Questions</title>
    <link>https://community.esri.com/t5/arcgis-online-questions/arcgis-com-map-adding-a-tile-layer-in-non-mercator/m-p/400341#M20097</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Dear ESRI Devs,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;When the ArcGIS Online Map (&lt;A href="http://www.arcgis.com/home/webmap/viewer.html" title="http://www.arcgis.com/home/webmap/viewer.html"&gt;http://www.arcgis.com/home/webmap/viewer.html&lt;/A&gt; ) is in Web Mercator projection (EPSG:3857), I can add tiled layers (Add -&amp;gt; Add Layer From Web -&amp;gt; A Tile Layer) without any problems. But when the Map is in another projection, let's say EPSG:2180, then every time I try to add a tile layer there's an error:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;EM style="color: #444444; font-size: 12px; font-family: Verdana, Helvetica, sans-serif;"&gt;&lt;SPAN&gt;The tile layer, &lt;/SPAN&gt;&lt;A class="jive-link-external-small" href="http://some_service_url" rel="nofollow" target="_blank"&gt;http://some_service_url&lt;/A&gt;&lt;SPAN&gt;, can't be added to the map because it does not support a coordinate system or tiling scheme that aligns with the basemap.&lt;/SPAN&gt;&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I understand why the error is displaying (the projection is other that Web Mercator), but the error message itself is not true, because:&lt;/P&gt;&lt;P&gt;1. There's no possible way to check if spatial reference and tiling scheme of that kind of layer is same as the basemap's&lt;/P&gt;&lt;P&gt;2. That kind of layer can always be added to the map with assumption that it's tiling scheme is same as the basemap, but when it's not, it will display incorrectly.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;It would be very useful for me and my team if we could add Tile Layers in non-standard projections. I know that very few people will benefit from this so I fully understand if you decide not to implement this functionality but it would be nice &lt;IMG src="https://community.esri.com/legacyfs/online/emoticons/grin.png" /&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Regards,&lt;/P&gt;&lt;P&gt;Jakub Malec&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Wed, 29 Apr 2015 08:34:27 GMT</pubDate>
    <dc:creator>JakubMalec</dc:creator>
    <dc:date>2015-04-29T08:34:27Z</dc:date>
    <item>
      <title>ArcGIS.com Map - Adding a Tile Layer in non-mercator projection</title>
      <link>https://community.esri.com/t5/arcgis-online-questions/arcgis-com-map-adding-a-tile-layer-in-non-mercator/m-p/400341#M20097</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Dear ESRI Devs,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;When the ArcGIS Online Map (&lt;A href="http://www.arcgis.com/home/webmap/viewer.html" title="http://www.arcgis.com/home/webmap/viewer.html"&gt;http://www.arcgis.com/home/webmap/viewer.html&lt;/A&gt; ) is in Web Mercator projection (EPSG:3857), I can add tiled layers (Add -&amp;gt; Add Layer From Web -&amp;gt; A Tile Layer) without any problems. But when the Map is in another projection, let's say EPSG:2180, then every time I try to add a tile layer there's an error:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;EM style="color: #444444; font-size: 12px; font-family: Verdana, Helvetica, sans-serif;"&gt;&lt;SPAN&gt;The tile layer, &lt;/SPAN&gt;&lt;A class="jive-link-external-small" href="http://some_service_url" rel="nofollow" target="_blank"&gt;http://some_service_url&lt;/A&gt;&lt;SPAN&gt;, can't be added to the map because it does not support a coordinate system or tiling scheme that aligns with the basemap.&lt;/SPAN&gt;&lt;/EM&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I understand why the error is displaying (the projection is other that Web Mercator), but the error message itself is not true, because:&lt;/P&gt;&lt;P&gt;1. There's no possible way to check if spatial reference and tiling scheme of that kind of layer is same as the basemap's&lt;/P&gt;&lt;P&gt;2. That kind of layer can always be added to the map with assumption that it's tiling scheme is same as the basemap, but when it's not, it will display incorrectly.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;It would be very useful for me and my team if we could add Tile Layers in non-standard projections. I know that very few people will benefit from this so I fully understand if you decide not to implement this functionality but it would be nice &lt;IMG src="https://community.esri.com/legacyfs/online/emoticons/grin.png" /&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Regards,&lt;/P&gt;&lt;P&gt;Jakub Malec&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 29 Apr 2015 08:34:27 GMT</pubDate>
      <guid>https://community.esri.com/t5/arcgis-online-questions/arcgis-com-map-adding-a-tile-layer-in-non-mercator/m-p/400341#M20097</guid>
      <dc:creator>JakubMalec</dc:creator>
      <dc:date>2015-04-29T08:34:27Z</dc:date>
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