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Mr SID & ArcGIS Online

JD1016

Hallo,

Ik heb een Mr. SID, RGB, web mercator hulpsfeer mozaïek met een resolutie van 3 inch die 24 gigabyte weegt.

Ik zou deze beelden heel graag willen toevoegen aan mijn basemap-galerij in ArcGIS Online om ze beschikbaar te maken voor zowel mijn interne als mobiele klanten.

In het verleden heb ik tegelpakketten gemaakt, Desktop het verwerken laten doen en deze geüpload naar ArcGIS Online, maar niet met een mozaïek van deze grootte.

Volgens mij kun je geen tegelpakket maken met een Mr. SID-afbeelding. Klopt dat?

Ik heb ook gehoord dat het converteren naar een TIF met JPEG YCbCr compressie op 75% een nog groter bestand oplevert. Klopt dat?

Als dit allemaal klopt, hoe kan ik deze beelden dan in ArcGIS Online krijgen om te gebruiken als een gehoste tegel-laag vanuit een geüpload tegelpakket?

Dank u.

Jeff

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Mosaic datasets

Accepted answers

jcarlson

Check out the Extract Package tool for getting the files out of the tile pack.

https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/extract-package.htm

Seems silly to do it in two tools, but I don't know if there's a direct method to just output the tiles in a folder structure in the first place. At least, not in ArcGIS.

Since you basemap gallery is made up of web maps, it really doesn't matter where the tiles are coming from. Our basemaps use a custom URL from where the tiles are stored, so I add the layer via URL, then save the web map and share it to our basemap group.

All comments

JD1016

Excellent! Thank you, Josh!

Jeff

jcarlson

Check out the Extract Package tool for getting the files out of the tile pack.

https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/extract-package.htm

Seems silly to do it in two tools, but I don't know if there's a direct method to just output the tiles in a folder structure in the first place. At least, not in ArcGIS.

JD1016

I've never generated a tile cache as a directory of tile images. That interesting. All my current aerials were uploaded via a tile package and "unwrapped" so to speak in AGO saving the credits as you mentioned. These are then added to the Basemap Gallery widget for each of my applications so the user can select different aerial years for viewing and swapping out the basemap backdrop as they go along.

Is there any documentation accessible discussing the generation of a tile cache as a directory of tile images?

How would this work in conjunction with my current setup using the Basemap Gallery widget for my other aerials?

Thanks.

Jeff

jcarlson

It's my understanding you cannot create a tile package using a Mr. SID image. Is that correct?

No, that's not correct. When you publish a tile package to AGOL, the input file can be any recognized raster format. Many of our basemap tiles started as SIDs.

If you publish a hosted imagery service from it, you will end up moving the entire file to AGOL, which will cost you lots of credits. But you get the option to manage the cache on AGOL. If you just generate a tile package locally, you can publish that to AGOL itself, and at least save the SID storage space.

Another alternative is to generate your tile cache as a directory of tile images. Instead of a .tpkx file or what have you, it would be JPEGs in nested folders like 4/14/233.jpg.

Once you have those tiles generated, you can just drop them on any publicly-accessible file hosting platform or web server (we use AWS S3), and you can add the imagery service to your maps using a url like http://web-host/your-tileset-name/{z}/{x}/{y}.jpg and the web map will grab the tiles based on the visible extent and zoom level.

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