Wayback not honoring identifier/tilematrix set when zooming in

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12-03-2020 12:14 PM
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CSAAdministrator
New Contributor II

In the HTML example below the tileMatrixSet and identifier are set to display the imagery from Wayback on 2017-03-15. Zooming in once will correctly get data from 3-15-2017. But zooming in again will switch to 4-20-2014 data See figures 1-3 

3-15-2017.png

compare 2014 vs 2017.png4-20-2014.png

 

What does it switch, and how can I determine when it will switch and to what date.

 

___________________

The following html code will display the issue

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Wayback Issue</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.32/esri/css/esri.css">
<style>
html, body, #map {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
</style>
<script src="https://js.arcgis.com/3.32/"></script>
<script>
require([
"dojo/dom-construct",
"esri/map",
"esri/geometry/Extent",
"esri/layers/WMTSLayerInfo",
"esri/layers/WMTSLayer",
"dojo/domReady!"
], function(
domConstruct,
Map,
Extent,
WMTSLayerInfo,
WMTSLayer
) {

var bounds = new Extent({
'xmin':4488937.02310209,
'ymin':-1222356.1703367431,
'xmax':4555437.237710103,
'ymax':-1191781.359022714,
'spatialReference':{'wkid':102100}
});

var layerInfo = new WMTSLayerInfo({
identifier: 'WB_2015_R23', format: 'jpeg',
tileMatrixSet: 'default028mm'});

var options = {layerInfo : layerInfo, serviceMode: 'KVP' };
url = 'https://wayback.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/MapServer';
https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer
var wmtsLayer = new WMTSLayer(url, options);

self.map = new Map('map',
{
basemap: 'topo-vector',
extent: bounds,
sliderPosition: 'top-right',
logo: false
});

self.map.addLayer(wmtsLayer);

}
);
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>

---------------------end of code _________________________

Note the following urls may be of help

(cf https://wayback.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/MapServer?request=GetCapabili... to verify that   "WB_2017_R05" correlated to 2017-03-15

https://wayback.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/WMTS/1.0.0/default028mm/MapSe...

was captured via fiddler for the 2017 data

https://wayback.maptiles.arcgis.com/arcgis/rest/services/world_imagery/wmts/1.0.0/default028mm/mapse...

was captured via fiddler for the 2014 data. Note the value after tile changed.

The following code suggest that the LODs exist for zoom level much lower than the 1:20,000 in question

https://csagss.maps.arcgis.com/sharing/rest/content/items/0494f3f9f47e4f81817b4196da330da5/data/?f=j....

 

{"templateUrl":"https://wayback.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/WMTS/1.0.0/default028mm/MapServer/tile/28163/{level}/{row}/{col}","copyright":"","fullExtent":{"xmin":-20037507.229594,"ymin":-20037508.626927227,"xmax":20037507.229594,"ymax":20037508.626927227,"spatialReference":{"wkid":102100}},"tileInfo":{"rows":256,"cols":256,"dpi":96,"origin":{"x":-20037508.342787,"y":20037508.342787,"spatialReference":{"wkid":102100}},"spatialReference":{"wkid":102100},"lods":[{"level":0,"levelValue":"0","resolution":156543.03392798046,"scale":591658710.9089025},{"level":1,"levelValue":"1","resolution":78271.5169639901,"scale":295829355.4544507},{"level":2,"levelValue":"2","resolution":39135.75848199517,"scale":147914677.72722584},{"level":3,"levelValue":"3","resolution":19567.879240997456,"scale":73957338.86361243},{"level":4,"levelValue":"4","resolution":9783.939620498726,"scale":36978669.43180621},{"level":5,"levelValue":"5","resolution":4891.969810249364,"scale":18489334.715903107},{"level":6,"levelValue":"6","resolution":2445.984905124682,"scale":9244667.357951554},{"level":7,"levelValue":"7","resolution":1222.992452562341,"scale":4622333.678975777},{"level":8,"levelValue":"8","resolution":611.4962262813027,"scale":2311166.8394883885},{"level":9,"levelValue":"9","resolution":305.74811314051914,"scale":1155583.4197436941},{"level":10,"levelValue":"10","resolution":152.87405657039182,"scale":577791.7098723471},{"level":11,"levelValue":"11","resolution":76.43702828506362,"scale":288895.85493567353},{"level":12,"levelValue":"12","resolution":38.21851414253181,"scale":144447.92746783677},{"level":13,"levelValue":"13","resolution":19.109257071265905,"scale":72223.96373391838},{"level":14,"levelValue":"14","resolution":9.554628535632952,"scale":36111.98186695919},{"level":15,"levelValue":"15","resolution":4.7773142679487695,"scale":18055.9909339796},{"level":16,"levelValue":"16","resolution":2.3886571339743847,"scale":9027.9954669898},{"level":17,"levelValue":"17","resolution":1.1943285668549,"scale":4513.997732994898},{"level":18,"levelValue":"18","resolution":0.597164283559742,"scale":2256.99886699745},{"level":19,"levelValue":"19","resolution":0.2985821416475791,"scale":1128.4994329987242},{"level":20,"levelValue":"20","resolution":0.14929107082378956,"scale":564.2497164993621},{"level":21,"levelValue":"21","resolution":0.07464553541189478,"scale":282.12485824968104},{"level":22,"levelValue":"22","resolution":0.03732276770594739,"scale":141.06242912484052},{"level":23,"levelValue":"23","resolution":0.018661383852973695,"scale":70.53121456242026}]},"wmtsInfo":{"url":"https://wayback.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/MapServer","layerIdentifier":"WB_2015_R23","tileMatrixSet":"default028mm"}

 

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