topic Re: ArcGIS Server: allowing tile resampling. in ArcGIS Enterprise Questions

ArcGIS Server: allowing tile resampling.

AlessandroValra — Fri, 17 Mar 2017 15:54:33 GMT

I've been trying to achieve what I was able to do in ArcGIS Online with ArcGIS Server as well.

I red this illuminating discussion on how to allow visualizing tile layers in ArcGIS Online for those scales where no cache was created through resampling.

It was as simple as entering the administrator REST directory by inserting "/admin/" in the right place (.../rest/admin/services/...), entering the edit page and adding {"resampling":true} to the service definition properties.

However, in the ArcGIS Server administrator directory, the edit page looks very different than it is in AGOL, and I am unsure on where should I place the "resampling":true string...

Is it even possible or am I wasting my time? Basically, I'd like to be able to zoom beyond the scales where I built the cache and being able to still visualize the tile service, although blurried because resampled. At least it would be better than nothing as it is now. Generating the cache is not a workaround as I'm very interested in the possibility of resampling on-the-fly possibly.

Finally, I have already set the tiling scheme to present the LODs from 0 to 17, and the cache is only generated until 14 (included). Below is the edit page of my service:

{ "serviceName": "Italia_web_POP", "type": "MapServer", "description": "", "capabilities": "Map,Query,Data", "provider": "ArcObjects", "clusterName": "default", "minInstancesPerNode": 1, "maxInstancesPerNode": 1, "instancesPerContainer": 1, "maxWaitTime": 60, "maxStartupTime": 300, "maxIdleTime": 1800, "maxUsageTime": 600, "loadBalancing": "ROUND_ROBIN", "isolationLevel": "HIGH", "configuredState": "STARTED", "recycleInterval": 24, "recycleStartTime": "00:00", "keepAliveInterval": 1800, "private": false, "isDefault": false, "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "maxImageHeight": "4096", "virtualCacheDir": "/rest/directories/arcgiscache", "maxSampleSize": "100000", "exportTilesAllowed": "false", "textAntialiasingMode": "Force", "maxImageWidth": "4096", "enableDynamicLayers": "false", "dynamicDataWorkspaces": "[]", "supportedImageReturnTypes": "URL", "disableIdentifyRelates": "false", "isCached": "true", "maxScale": "36111.909642999999", "maxBufferCount": "100", "schemaLockingEnabled": "true", "maxRecordCount": "1000", "filePath": "C:\\arcgisserver\\directories\\arcgissystem\\arcgisinput\\STUDIOSIT\\Italia_web_POP.MapServer\\extracted\\v101\\Italia_web_POP.msd", "cacheOnDemand": "false", "useLocalCacheDir": "true", "cacheExtent": "full", "outputDir": "C:\\arcgisserver\\directories\\arcgisoutput", "virtualOutputDir": "/rest/directories/arcgisoutput", "minScale": "18489297.737236001", "maxDomainCodeCount": "25000", "maxExportTilesCount": "100000", "tilingScheme": "1", "ignoreCache": "false", "antialiasingMode": "None", "clientCachingAllowed": "true", "cacheDir": "C:\\arcgisserver\\directories\\arcgiscache" }, "extensions": [ { "typeName": "NAServer", "capabilities": "null", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "oDCostMatrix_MaxDestinationsToFind": "", "serviceArea_MaxBreakValue_TimeUnits": "esriTimeUnitsMinutes", "vRP_MaxFeaturesInPolygonBarriers": "", "vRP_MaxRoutes": "", "serviceArea_MaxBarriers": "", "route_MaxFeaturesInLineBarriers": "", "vRP_ForceHierarchyBeyondDistanceUnits": "esriMeters", "route_ForceHierarchyBeyondDistanceUnits": "esriMeters", "locationAllocation_MaxDemandPoints": "", "closestFacility_MaxFeaturesInPolygonBarriers": "", "closestFacility_MaxFacilities": "", "oDCostMatrix_MaxDestinations": "", "serviceArea_MaxBreakValue_Length": "", "serviceArea_ForceHierarchyBeyondTimeUnits": "esriTimeUnitsMinutes", "serviceArea_ForceHierarchyBeyondDistanceUnits": "esriMeters", "vRP_MaxFeaturesInLineBarriers": "", "closestFacility_ForceHierarchyBeyondDistanceUnits": "esriMeters", "route_AllowTimeWindows": "true", "serviceArea_MaxFacilities": "", "locationAllocation_MaxFeaturesInPolygonBarriers": "", "oDCostMatrix_MaxFeaturesInLineBarriers": "", "route_MaxFeaturesInPolygonBarriers": "", "locationAllocation_ForceHierarchyBeyondDistance": "", "saveLayerOnServerWhenError": "false", "route_ForceHierarchyBeyondDistance": "", "locationAllocation_ForceHierarchyBeyondDistanceUnits": "esriMeters", "serviceArea_ForceHierarchyBeyondTime": "", "route_MaxStops": "", "serviceArea_MaxFeaturesInLineBarriers": "", "closestFacility_MaxIncidents": "", "oDCostMatrix_ForceHierarchyBeyondDistanceUnits": "esriMeters", "allowSaveLayerOnServer": "true", "route_MaxBarriers": "", "vRP_MaxBarriers": "", "oDCostMatrix_ForceHierarchyBeyondDistance": "", "serviceArea_MaxBreakValue_LengthUnits": "esriMeters", "serviceArea_ForceHierarchyBeyondDistance": "", "saveLayerOnServerWhenDebugging": "false", "closestFacility_MaxFeaturesInLineBarriers": "", "oDCostMatrix_MaxFeaturesInPolygonBarriers": "", "oDCostMatrix_MaxBarriers": "", "closestFacility_MaxFacilitiesToFind": "", "closestFacility_MaxBarriers": "", "serviceArea_MaxBreakValue_Other": "", "defaultOutputGeometryPrecisionUnits": "esriMeters", "vRP_ForceHierarchyBeyondDistance": "", "oDCostMatrix_MaxOrigins": "", "locationAllocation_MaxBarriers": "", "locationAllocation_MaxFeaturesInLineBarriers": "", "closestFacility_ForceHierarchyBeyondDistance": "", "nALayerDir": "C:\\arcgisserver\\directories\\arcgisoutput", "vRP_MaxOrders": "", "serviceArea_ForceHierarchyBeyondOther": "", "defaultOutputGeometryPrecision": "", "serviceArea_MaxFeaturesInPolygonBarriers": "", "serviceArea_MaxBreakValue_Time": "", "locationAllocation_MaxFacilities": "" } }, { "typeName": "MobileServer", "capabilities": "", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": {} }, { "typeName": "KmlServer", "capabilities": "SingleImage,SeparateImages,Vectors", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "minRefreshPeriod": "30", "compatibilityMode": "GoogleEarth", "imageSize": "1024", "dpi": "96", "endPointURL": "", "featureLimit": "1000000", "useDefaultSnippets": "false" } }, { "typeName": "WFSServer", "capabilities": "null", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "phone": "", "appSchemaURI": "http://www.geomaster.it:6080/arcgis/services/STUDIOSIT/Italia_web_POP/MapServer/WFSServer", "providerSite": "", "administrativeArea": "", "electronicMailAddress": "", "pathToStoredQueryFile": "", "enableTransactions": "false", "city": "", "hourOfService": "", "title": "", "postalCode": "", "customGetCapabilities": "false", "name": "Italia_web_POP", "deliveryPoint": "", "role": "", "axisOrderWFS10": "longlat", "axisOrderWFS11": "latlong", "serviceTypeVersion": "", "accessConstraints": "", "positionName": "", "abstract": "", "onlineResource": "http://www.geomaster.it:6080/arcgis/services/STUDIOSIT/Italia_web_POP/MapServer/WFSServer", "facsimile": "", "keyword": "", "defMaxFeaturesValue": "", "individualName": "", "fees": "", "serviceType": "", "enableDefMaxFeatures": "false", "country": "", "providerName": "", "transactionsWithoutLocks": "false", "pathToCustomGetCapabilitiesFiles": "", "appSchemaPrefix": "STUDIOSIT_Italia_web_POP", "contactInstructions": "" } }, { "typeName": "SchematicsServer", "capabilities": "Query", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": {} }, { "typeName": "FeatureServer", "capabilities": "Create,Query,Update,Delete,Uploads,Editing", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "creatorPresent": "false", "dataInGdb": "false", "xssPreventionEnabled": "true", "allowGeometryUpdates": "true", "syncVersionCreationRule": "versionPerDownloadedMap", "allowOthersToQuery": "true", "syncEnabled": "false", "editorTrackingTimeZoneID": "UTC", "enableZDefaults": "false", "realm": "", "allowOthersToDelete": "false", "allowTrueCurvesUpdates": "false", "datasetInspected": "true", "editorTrackingRespectsDayLightSavingTime": "false", "zDefaultValue": "0", "enableOwnershipBasedAccessControl": "false", "editorTrackingTimeInUTC": "true", "allowOthersToUpdate": "false" } }, { "typeName": "WCSServer", "capabilities": "null", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "phone": "", "maxImageHeight": "", "maxImageWidth": "", "city": "", "providerWebsite": "", "title": "STUDIOSIT_Italia_web_POP", "customGetCapabilities": "false", "name": "Italia_web_POP", "province": "", "role": "", "accessConstraints": "Nessuno", "abstract": "", "onlineResource": "http://www.geomaster.it:6080/arcgis/services/STUDIOSIT/Italia_web_POP/MapServer/WCSServer", "keywords": "", "fax": "", "zipcode": "", "fees": "", "country": "", "responsiblePerson": "", "providerName": "", "responsiblePosition": "", "email": "", "address": "", "pathToCustomGetCapabilitiesFiles": "", "serviceHour": "", "contactInstructions": "" } }, { "typeName": "WMSServer", "capabilities": "GetCapabilities,GetMap,GetFeatureInfo,GetStyles,GetLegendGraphic,GetSchemaExtension", "enabled": "false", "maxUploadFileSize": 0, "allowedUploadFileTypes": "", "properties": { "reaspect": "false", "inheritLayerNames": "false", "contactPosition": "", "contactVoiceTelephone": "", "city": "", "contactFacsimileTelephone": "", "title": "STUDIOSIT_Italia_web_POP", "contactOrganization": "", "customGetCapabilities": "false", "name": "WMS", "stateOrProvince": "", "accessConstraints": "", "abstract": "", "onlineResource": "http://www.geomaster.it:6080/arcgis/services/STUDIOSIT/Italia_web_POP/MapServer/WMSServer", "keyword": "", "postCode": "", "fees": "", "addressType": "", "pathToCustomSLDFile": "", "country": "", "address": "", "contactElectronicMailAddress": "", "pathToCustomGetCapabilitiesFiles": "", "contactPerson": "", "listSupportedCRS": "" } } ], "datasets": [] }

Re: ArcGIS Server: allowing tile resampling.

JonathanQuinn — Fri, 17 Mar 2017 16:59:17 GMT

Are you trying this in your own application? I thought I read in a post somewhere that you can configure the application to render tiles until an LOD, and at that point, render it dynamically. I can't find it now, though, but if you're using your own custom application, it may be a start.

Re: ArcGIS Server: allowing tile resampling.

AlessandroValra — Mon, 20 Mar 2017 10:50:24 GMT

Hi Jonathan, thanks for the response.

Indipendently of wheter I am using it with my own application or not, I think I should clarify the situation.

I am actually asking if it is possible to allow resampling for those LODs that are present in the MapService detail page (in REST), but are not rendered because cache wasn't generated. I did this with AGOL, and I thought it was also possible with ArcGIS Server as well.

So, let's say I have LODs from 0 to 17. Cahce was generated only down to level 14 (included). Resampling would allow me to draw them dynamically from the last LOD where the tile were cached (generated), although they will show up blurried (as it's a resample).

In AGOL I could go to the administrator REST directory, enter the EDIT page of my Tiled service, and in the Properties window (which shows up completely blank), write "{"resampling":true}" (without double quotes). Ten open a map in AGOL with the same tile service loaded, zoom to a LOD where cache was not generated and keep seeing the layer resampled.

If resample is not true (the default), I cannot see anything of my layer when I zoom in a LOD which is specified for the service, but no cache (tile), was generated. This is my situation with my actual MapServer and ArcGIS Server.

Re: ArcGIS Server: allowing tile resampling.

JonathanQuinn — Mon, 20 Mar 2017 15:41:47 GMT

I don't believe this is possible with a traditional ArcGIS Server service. If your server is federated to Portal, what you can try is to publish a hosted cached service and then try to add that property to that service. The same type of service would be published to AGOL, so you're testing against more similar things.

Re: ArcGIS Server: allowing tile resampling.

AlessandroValra — Tue, 21 Mar 2017 09:03:47 GMT

Thanks Jonathan,

Actually my AGS is not federated with a Portal yet. So I think either I federate it or I should build the cache fot the LODs where tiles are missing. Again, thanks for proposing a possible workaround (it probably work as I was successful with AGOL). I will mark your answer as correct (at least until someone would come up saying it is possible and how).

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Wed, 30 Aug 2017 23:45:30 GMT

From what I understand you are tryingto do this is possible and we do it. One trick is the doco online is a little wrong in saying you add the line;

"resampling":true

in fact it should be

"resampling" : "true"

as per the other configurations. Also the level above must be half the resolution - fine if you are in teh Google/Bing tiling scheme but not always the case and wasn't in ours as we had built to 'nice' scales (1:50,000 and then 1:20,000 for example)

What are you consuming this service as - we are yet to get it working via WMS but via Esri rest it all works fine for us.

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Tue, 22 Jun 2021 08:35:09 GMT

I just stumbled across this.

This should definitely be a default behavior. After the max LOD in a tile service it should by default resample and render it dynamically. Please consider this a Feature Enhancement. I have created an idea. Please vote for it. https://community.esri.com/ideas/14421

Re: ArcGIS Server: allowing tile resampling.

NicolasGIS — Fri, 16 Feb 2018 11:32:18 GMT

Hello,

Just wanted to share that I added the resampling to true on a tiledMapService of ArcGIS Server 10.4 as well and it was not working after.

Debugging showed me that the property had been taken into account as "blankTile=false" was added to my request, but then it went through all the tiling scheme to find the previous level but it did not find any. I had this kind of error in my console:

It should have been able to find tile at level 14 but it seems that it requested the wrong one.

Looking at the javascript API, I found out that in the _resample method of the TiledMapServiceLayer, it is assuming that levels follow a scale/2 LOD pattern (this._multiple = Math.pow(2, f)) and it was not the case of my tiling scheme.

I modified the tiling scheme for the last levels and it worked.

So maybe it should be added to the workflow:

1. Make sure your tiling scheme follow a scale/2 pattern at least for the scales you want to be able to resample.

2. Add the property "resampling" : "true", property to the JSON and don't forget that according to the documentation:

How To: Enable resampling for a map service in the ArcGIS Server Administrator Directory

You are supposed to add the property before the maxRecordCount one.

Hope that help,

Nicolas

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Thu, 26 Apr 2018 20:27:18 GMT

is this not possible for ImageServices? (published straight from mosaic dataset in Catalog 10.5.1?) If so, I wish it was. This would be extremely useful for aerial imagery sets. I added the property and it didn't do anything. Does it only work with MapServer services published out of MXD?

Re: ArcGIS Server: allowing tile resampling.

NicolasGIS — Fri, 15 Jun 2018 09:58:28 GMT

It works on cached service : did you generate a cache for your service ?

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Mon, 18 Jun 2018 16:46:30 GMT

They are cached 10.5.1 image services. Folder: ImageryBasemap I added the JSON and it seems to have no effect. Currently just re-added it to 2017. This would be very useful. Because it would enable users to publish the service, start tiling, but users could begin using it immediately while it tiles. And moreover it would enable dramatic space savings (terabytes) by having us not have to cache 1:71. Just having it resample on the fly. Because otherwise it just "disappears". However, what I did was enable tiling on demand. However I've noticed that can be very slow if the server is under load. Resampling is much faster.

For a test I disabled tile on demand and added resample to the 2016 imagery ImageryBasemap/Chatham_Pictometry_2016 (ImageServer)

It does not resample. Bug?

Re: ArcGIS Server: allowing tile resampling.

AndyVenuto1 — Fri, 24 Aug 2018 15:47:59 GMT

Kevin, I totally agree. This would be extremely helpful to many folks.

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Fri, 24 Aug 2018 18:37:29 GMT

And now I'm back in tiling hell. I need to add literally one tile to the 2017 imagery, and no dice. I finally added the raster after getting past another long-standing bug cannot add to existing mosaic dataset Now it simply won't start tiling the service. Restarted service, restarted caching GP tools, rebuilt status etc. The overall imagery workflow could use input from stakeholders ie users. For example they could crib from my thread on settings and guide users in the Docs to simply use bilinear jpg ybcr 80% in a gdb (not SDE). Basically all the raster defaults are wrong for aerials (ie nearest neighbor is the default). Fix the bugs, up the performance. A bug bounty might be win-win for the company and community... food for thought..

Re: ArcGIS Server: allowing tile resampling.

Jack_Zhang — Thu, 20 Sep 2018 12:21:30 GMT

hi Nicolas, Thanks for the post. I tested on our own ArcGIS Server 10.5 the "resamping":"true" did the trick, though it seems even it was placed above maxrecordCount item, it will automatically be moved before maxExportTilesCount. However, I also had the 404 error caused by blankTile=false. My tile scheme did follows the scale/2 pattern (e.g. 2000,1000,500,250), and I even tried put a blank.png under the _allLayer folder according to How To: Configure the cache folder to display a 'Data not available' tile for empty map cache areas or missing tiles , but it still returns the error, though it won't effect the final result. I'm wondering did you ever solved the 404 error on your end?> thanks

Re: ArcGIS Server: allowing tile resampling.

NicolasGIS — Thu, 20 Sep 2018 13:13:53 GMT

Hi Jack,

On my side 404 error was due to the tiling scheme not following a scale/2 pattern. Once I updated the tiling scheme, it worked.

Also, I was using 3.25 JS API. Are you using 4.X by any chance ? Maybe the behavior is different. I never tested on 4.X.

Would you have a url to test ?

Nicolas

Re: ArcGIS Server: allowing tile resampling.

Jack_Zhang — Mon, 24 Sep 2018 05:53:28 GMT

Hi Nicolas, I'm sorry i can't share the URL, but good to hear yours working. My tile schema is 1:2000, 1:1000, 1:500, 1:250, where I created cache for 1:2000 and 1:1000. My ArcGIS Server is 10.5, I tested on both the built-in JS viewer in the REST end point which runs JS API 3.18, as we as JS API 3.25, both returns me 404 error though resampling worked fine.

Re: ArcGIS Server: allowing tile resampling.

NicolasGIS — Wed, 26 Sep 2018 10:55:34 GMT

Hi Jack,

Sorry, I had misunderstood your point.

It does return some 404 errors for me as well. It is I believe the normal workflow: I request a tile which does not exist (404 error), resampling is enabled so OK let's resample the previous one !

What I meant on my previous post related to 404 errors, is that when reaching the level for which there were no tiles (in my case level 15) it tried to resample the previous one (14) but as my schema was not a level/2 one, it looked for a wrong tile so it returned 404 error once again and so on even for levels which had tiles. So at the end, I had a blank tile when "overzooming".

If you pay attention to the 404 errors I had on my post, it goes from level 15 to 0 but tiles did not exist only at level 15 !

I hope it is clearer but I think you are good !

Re: ArcGIS Server: allowing tile resampling.

Jack_Zhang — Mon, 15 Oct 2018 05:06:07 GMT

FYI, just got ESRI support replied me on this question. Basically it seems it's expected and no way to fix. the original answer is below

"The reason why the ArcGIS Online servers do not have the 404 it that the blankTile parameter is not usually included in ArcGIS Online basemaps and tiles requests. Hence there is no error to report back.
ArcGIS Online has a different mechanism when it comes to detecting missing tiles. Its basemaps use a content delivery network (CDN) to provide faster response time.

The 404 error is considered part of the expected behavior for ArcGIS Server basemaps as per this documentation.

" By specifying this option, it does not necessarily mean resampling to any scale will work. For example, a tiled map layer may not have data beyond level 15 in some areas (for example rural areas). But in other areas (for example metropolitan areas), it may have data down to level 19. Enabling resampling would draw images all over to the last level and deliver a consistent user experience. In areas with no data, blurred images display. The tiled services need to return a 404 for missing tiles to get this option to work. Note that 404s for missing tiles did not become the default for ArcGIS Server until 10.2. Added at 3.6, updated at 3.12""

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Thu, 29 Nov 2018 18:31:34 GMT

Jack, thanks for that reply. Well, that's unfortunate. I may look in to geoserver or other software and maybe cut the cord on the ImageServer license.

Re: ArcGIS Server: allowing tile resampling.

Anonymous User — Fri, 06 Mar 2020 16:02:58 GMT

I will be looking in to why we need to continue paying for ImageServer if this can't get fixed soon.

I would like to tile to 1:1,100 and then after that, tile on Demand. BUT... I also want it to resample at the same time. The reason is that resampling is fast while tile on demand is slow. Server should be smart enough to show the user the fast resample, and then show the tiles when they are ready; and in the future when users view that extent it will show just the tiles.