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Flux de travail pour fusionner les modifications des données hébergées AGOL dans Desktop FGDB

JeffreyWarren

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Bonjour à tous,<\/P>

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Nous hébergeons actuellement tous nos services de fonctionnalités sur AGOL. C'est la première fois que je récupère les données d'AGOL pour les réintégrer dans ArcGIS Desktop. Je cherche des idées de flux de travail pour extraire les données du fgdb (créé à partir d'AGOL) et les fusionner avec mon jeu de données original. L'équipe sur le terrain est sortie et a mis à jour beaucoup d'attributs et je souhaite les récupérer. Je ne veux rien faire avec la géométrie car j'en ai déplacé plusieurs. Tout ce que je veux, c'est l'attribution ainsi que les pièces jointes/photos qu'ils ont assignées.<\/P>

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Quelqu'un aurait-il des idées de flux de travail qu'il serait prêt à partager ? J'aimerais éventuellement automatiser le processus si possible.<\/P>

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La seule idée qui me vient à l'esprit est de créer une jointure (en utilisant Facility ID) et de faire un calcul de champ, mais je ne sais pas si quelqu'un a d'autres idées. Nos données sont dans le schéma LGIM, mais pour l'instant je me concentre sur Waste Water. Mais j'ai d'autres services publics en attente une fois celui-ci terminé.<\/P>

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Merci d'avance,<\/P>

Jeff<\/P><\/BODY><\/HTML>

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Accepted answers

EmilieBrill-Duisberg

Hi Jeff,

This is a challenge that Enterprise geodatabases and ArcGIS for Server services are well-suited for. However, when working with file geodatabases and hosted feature services, you can get your newly collected attributes from your Collector data into your old feature class using joins and field calculations. Transferring the attachments is a bit trickier, but follows the same basic logic. You can use the following workflow to port your Collector attachments over to your previous geometry without bringing along the geometry created in the Collector app. This workflow could be made into a ModelBuilder model or Python script for automation.

1. Export your ArcGIS Online feature service, edited in Collector, to a new file geodatabase and download it to your local machine.

2. The file geodatabase contains a relationship class which connects the features to the attachments using a GlobalID and a REL_GLOBALID field:

3. Perform an attribute join to append the attribute fields from the downloaded feature class to your original feature class. This join is based on a unique ID that exists in both tables and is necessary because we need to get the GlobalID field created by ArcGIS Online when the photos were collected into your original feature class as shown below. It is a good practice to export to a new feature class after the join has been created to prevent any unexpected behavior caused by an active join.

4. Next, perform an attribute join to append the attribute fields from the downloaded attachment table to the output of Step 3 above. This join is based on the Global ID and REL_GLOBALID fields:

5. It's a good idea once again to make the join permanent by copying the features to a new feature class. Now, we have a single feature class containing your original geometry and containing the Attachment IDs and the Attachment Names from the Collector data downloaded from ArcGIS Online. This will be critical for matching up the correct photos and features.

6. Create a file directory on your computer and batch download all your attachments using the instructions given at http://support.esri.com/technical-article/000011912.

7. Add a new text field to the output of Step 5 for the filepaths of your attachments.

8. Populate the field with your attachment filepaths using Field Calculator. In VB, the code would be:

"<path to the folder with your photos>\ATT" & [ATTACHMENTID] & "_" & [ATT_NAME]

9. You should end up with a complete filepath which matches those of the photos you batch downloaded in Step 6:

10. Enable attachments on this feature class using the Enable Attachments tool. Then use the Add Attachments tool to attach the photo/video attachments:

This will match your attachments to the correct feature and create a new relationship class between the final output of the above workflow and an attachment table containing your media.

Best wishes,

Emilie

Esri Support

All comments

EmilieBrill-Duisberg

Hi Jeff,

1. Export your ArcGIS Online feature service, edited in Collector, to a new file geodatabase and download it to your local machine.

2. The file geodatabase contains a relationship class which connects the features to the attachments using a GlobalID and a REL_GLOBALID field:

4. Next, perform an attribute join to append the attribute fields from the downloaded attachment table to the output of Step 3 above. This join is based on the Global ID and REL_GLOBALID fields:

6. Create a file directory on your computer and batch download all your attachments using the instructions given at http://support.esri.com/technical-article/000011912.

7. Add a new text field to the output of Step 5 for the filepaths of your attachments.

8. Populate the field with your attachment filepaths using Field Calculator. In VB, the code would be:

"<path to the folder with your photos>\ATT" & [ATTACHMENTID] & "_" & [ATT_NAME]

9. You should end up with a complete filepath which matches those of the photos you batch downloaded in Step 6:

10. Enable attachments on this feature class using the Enable Attachments tool. Then use the Add Attachments tool to attach the photo/video attachments:

This will match your attachments to the correct feature and create a new relationship class between the final output of the above workflow and an attachment table containing your media.

Best wishes,

Emilie

Esri Support

AdrianWelsh

Emilie,

This is a great step-by-step workflow that you have here. One thing though, I cannot see most of your images. This is what I see:

Is there a way to get those images to appear?

EmilieBrill-Duisberg

Hi, Adrian!

Sorry about that. The images should work now.

-Emilie

CodyBarrett1

Hi Emilie-

Does this take into account multiple photos per one feature(1 to Many)?

EmilieBrill-Duisberg

Hi Cody,

Yes, this can work even with a 1:M cardinality of features to attachments. It is actually possible to perform a 1:M join in ArcGIS (you would do this in Step 4 of the above workflow); this will create duplicate geometry for any feature that has more than one attachment:

Make sure both tables/feature classes are in a file geodatabase.
Create the attribute join as you normally would: right click on the larger table, choose join. Be sure to choose the option to Keep all records.
You will get join validation errors; this is expected.
Right-click on the feature class to which you just applied a join, and export it to a new file geodatabase feature class. After the export open up the table and note that there are now many more records -- instead of only the first matching record being displayed, each matching record has its own line in the table.
Remove the attribute join you created.

Run through the steps to create the folder path to your photos in the output of the 1:M join, and then use this as the Match Table when you run the Add Attachments tool. The Input Dataset will be the original feature class to which you're trying to add the attachments. This will match multiple attachments to a single feature as specified in the Input Join Field and Match Join Field, and re-create the 1:M relationship class of the downloaded file geodatabase.

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