https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/scale-tile-for-missing-zoom-level/m-p/1234038#M79406 <P>Hello,&nbsp;</P><P>I have custom geoTiff, I sliced it to tiles and I use</P><DIV><SPAN>BaseTileLayer</SPAN><SPAN>.</SPAN><SPAN><SPAN>createSubclass -&gt;&nbsp;</SPAN></SPAN><SPAN>getTileUrl for loading these tiles to a separate layer</SPAN></DIV><DIV><SPAN>If some tiles are missing my API server will return 404, </SPAN></DIV><DIV><SPAN>I have tiles for 18 zoom level max</SPAN></DIV><DIV><SPAN>If I will zoom, it works fine - an image will scale, even to 23 level, this is great!</SPAN></DIV><DIV><SPAN>But, if I will move my extent I will see just a default Esri map,</SPAN></DIV><DIV><SPAN>also, if I will move my extent back - the scaled tile is gone.</SPAN></DIV><DIV><SPAN>Is it possible to "cache" loaded images and load scaled parts when it's necessary(on 404 error)?</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>So far I'm picturing something like - an interceptor that will save all images, then figure out how to translate tile coordinates between different zoom levels and use some particular cached image.</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>As example, I'm looking for something similar to&nbsp;<A href="http://ghybs.github.io/Leaflet.TileLayer.Fallback/examples/tileLayerFallback-demo.html" target="_blank">Leaflet.TileLayer.Fallback demo page (ghybs.github.io)</A></SPAN></DIV> Tue, 22 Nov 2022 10:42:14 GMT Karrok 2022-11-22T10:42:14Z https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/scale-tile-for-missing-zoom-level/m-p/1234038#M79406 <P>Hello,&nbsp;</P><P>I have custom geoTiff, I sliced it to tiles and I use</P><DIV><SPAN>BaseTileLayer</SPAN><SPAN>.</SPAN><SPAN><SPAN>createSubclass -&gt;&nbsp;</SPAN></SPAN><SPAN>getTileUrl for loading these tiles to a separate layer</SPAN></DIV><DIV><SPAN>If some tiles are missing my API server will return 404, </SPAN></DIV><DIV><SPAN>I have tiles for 18 zoom level max</SPAN></DIV><DIV><SPAN>If I will zoom, it works fine - an image will scale, even to 23 level, this is great!</SPAN></DIV><DIV><SPAN>But, if I will move my extent I will see just a default Esri map,</SPAN></DIV><DIV><SPAN>also, if I will move my extent back - the scaled tile is gone.</SPAN></DIV><DIV><SPAN>Is it possible to "cache" loaded images and load scaled parts when it's necessary(on 404 error)?</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>So far I'm picturing something like - an interceptor that will save all images, then figure out how to translate tile coordinates between different zoom levels and use some particular cached image.</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>As example, I'm looking for something similar to&nbsp;<A href="http://ghybs.github.io/Leaflet.TileLayer.Fallback/examples/tileLayerFallback-demo.html" target="_blank">Leaflet.TileLayer.Fallback demo page (ghybs.github.io)</A></SPAN></DIV> Tue, 22 Nov 2022 10:42:14 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/scale-tile-for-missing-zoom-level/m-p/1234038#M79406 Karrok 2022-11-22T10:42:14Z