topic Re: Add imagery for offline use in ArcGIS Earth Questions

Add imagery for offline use

AsafEvenPaz — Mon, 23 Nov 2020 21:34:43 GMT

Hi,

I wanted to know if it is possible to add the imagery basemap (as a mobile scene package or something else) and then take it offline in ArcGIS Earth.

Re: Add imagery for offline use

Andrew--Johnson — Mon, 23 Nov 2020 22:20:58 GMT

Hi,

The easiest way is to use the Download Map option on the Map Tab or Tile Package Kreator (second link).

https://pro.arcgis.com/en/pro-app/help/projects/take-a-map-offline.htm#ESRI_SECTION1_50BF87B39D1046E8BD49EA6B40AD5DAB

https://www.arcgis.com/home/item.html?id=9c9ddae83e5549bb88a2c22e87a18ba1

This will create a tile package. Since the tile package will be in Web Mercator you will need to add that to a basemap and then to a new global scene in order for the Create Mobile Scene Package tool to set the Scene's coordinate system as Web Mercator.

https://pro.arcgis.com/en/pro-app/help/mapping/map-authoring/basemap-and-elevation-sources.htm

https://pro.arcgis.com/en/pro-app/help/mapping/map-authoring/author-a-basemap.htm#ESRI_SECTION1_65A60934882541EFA2130B51B34F9D47

Re: Add imagery for offline use

AsafEvenPaz — Mon, 30 Nov 2020 15:07:52 GMT

@Andrew Thanks for the response. I am trying to use the "Download Map" option in Pro but the tile package which gets created does not show tiles beyond the 1:5000 scale even if I set the "Max scale for Tile Layers" to 1: 142 (the default). Any way to fix this? I know this is slightly off topic but without maximum available resolution the 3D scene I am creating will not be useful...

Re: Add imagery for offline use

Andrew--Johnson — Tue, 01 Dec 2020 16:11:22 GMT

Hi,

Are you trying to take a large area offline? Based on the help it says "Each tile layer has a maximum number of tiles that can be taken offline. If your map covers a large area, the maximum tile limit will be reached at a given scale." so it appears that you are reaching a limit here and one way to verify is zooming in to a smaller area and see if you can get more tiles. I'll reach out to the team that implemented this to confirm.

thanks,

Andrew

Re: Add imagery for offline use

AsafEvenPaz — Tue, 01 Dec 2020 16:32:43 GMT

Yes - I am trying to take it offline. I tried zooming in on a smaller area but did not see any change. Also, there is no error message to indicate there is a problem...

Re: Add imagery for offline use

Andrew--Johnson — Tue, 01 Dec 2020 16:56:26 GMT

Hi,

It's probably best to clarify larger vs smaller...for me I zoomed in on a neighborhood using the World Topographic basemap and was able to take all zoom levels offline. Which basemap are you using? I reached out to the team in charge of this and am still waiting to hear back.

thanks,

Andrew

Re: Add imagery for offline use

AsafEvenPaz — Tue, 01 Dec 2020 17:46:37 GMT

The area is about 7 sq km. I am trying to use the imagery basemap

Re: Add imagery for offline use

Andrew--Johnson — Tue, 01 Dec 2020 22:30:21 GMT

Hi,

Thanks for those details. I heard back from our Content Management Team and it looks like for the World Imagery there is a maximum export tile request of 150,000 tiles. This is specified here https://www.arcgis.com/home/item.html?id=226d23f076da478bba4589e7eae95952

They did say that they are looking to add better messaging/error handling when the max tile count is reached. In your case it does seem to me all of it should download for 7sq km. If you want to create a bookmark at the location you are downloading the map and then send me the bookmark I can try on my end. Otherwise the only other recommendation I have is to use an alternative imagery source for example NAIP imagery https://datagateway.nrcs.usda.gov/GDGHome_DirectDownLoad.aspx

Re: Add imagery for offline use

Andrew--Johnson — Wed, 02 Dec 2020 15:47:53 GMT

Hi,

A colleague pointed an alternative that may work for you. In the case of utilizing a larger extent with a lower resolution you can edit the conf.xml to ensure the imagery displays at all zoom levels. This is explained in the post below

https://community.esri.com/t5/arcgis-explorer-questions/make-tile-package-tpk-visible-at-all-scales/m-p/767931

Re: Add imagery for offline use

AsafEvenPaz — Wed, 02 Dec 2020 15:57:05 GMT

Andrew,

Here is the bookmark - please try on your end and let me know.

Re: Add imagery for offline use

Andrew--Johnson — Wed, 02 Dec 2020 23:09:32 GMT

Hi,

I was able to create the tpk with all 18 levels.

Re: Add imagery for offline use

AsafEvenPaz — Wed, 02 Dec 2020 18:26:35 GMT

I opened this up on ArcGIS Pro and I am still not seeing beyond 1:5000.

Am I missing something here?

Re: Add imagery for offline use

Andrew--Johnson — Wed, 02 Dec 2020 20:44:28 GMT

Nope there's nothing you're missing the max scale for this area is <LevelID>17</LevelID><Scale>4513.9887049999998</Scale> so you won't be able to view past this LOD. If you add this into ArcGIS Earth you will be able to continue to zoom in but the resolution will stay the same.

Re: Add imagery for offline use

AsafEvenPaz — Wed, 02 Dec 2020 21:29:37 GMT

Thanks 🙂

BTW - how did you find out the maximum scale value?

Re: Add imagery for offline use

Andrew--Johnson — Wed, 02 Dec 2020 23:06:55 GMT

I opened the tpk with 7zip and if you go into the v101/Layers folders you'll see the conf.xml. There you will find the scale for LevelID 17. I confirmed the levels by going into the _alllayers folder to see that the highest LOD was L17. If you were in another region with more LODs you would see more levels but in this region the highest is 17 which I also confirmed by comparing the TPK to the basemap.