This is part of a larger tutorial created and presented as "Walkthrough of GeoConcerns".

Create a collection

  1. What is a collection?
  2. Make a collection
  3. Add items to the collection

What is a collection?

"Anything you want it to be." 
- Jon Stroop

In Hydra/PCDM, a collection is an arbitrary grouping of resources to use how you see fit. In the previous steps, we created an image work for a scanned map and a child raster work for a georectified version of that map. Perhaps we are just starting the process of digitizing and preserving a set of related maps. We can use a collection to group these objects together.

Make a collection

  1. Click the + symbol in the upper-right corner.
  2. Select Add a Collection from the drop-down menu.


  3. Fill out fields on the Create New Collection form. Only the Title field is required.


  4. Click the Create Collection button at the bottom of the page.
  5. You’ve now created your first collection!

Add items to the collection

  1. On the Collection show page, click Add file from your dashboard
  2. Find the Select an action button next to your raster work.
  3. Select Add to a Collection


  4. Select your new collection from the drop-down menu on the dialog box.


  5. The raster work is now part of the collection.


  6. Click on the Raster Work title to go to it’s show page and then head over to the next section.