Categories

Table of contents

1. Definition
   1. Super Categories
   2. Permissible Classes
2. Browse Categories
3. Create a Category

Definition

Categories are used to classify elements across the system. Any categorizable entity (Missions, Instruments, Data Products, etc.) can be assigned one or more Categories.

Categories are defined with:

• Name, Short Name, and Definition (as with all entities)
• Super Categories: Parent categories forming a hierarchy
• Permissible Classes: Entity types that can be members of this category

Super Categories

Super Categories create a hierarchical classification system. A category may have multiple super categories, forming an acyclic graph (not a strict tree).

For example:

• Super category: Spectrometer
  • Sub-category: Cross-nadir shortwave (UV/VIS) sounder
  • Sub-category: Limb emission IR spectrometer

Permissible Classes

A category’s Permissible Class list defines which entity types can be categorized by it. For example, a category called “Visible spectrum” might have only Payload as a permissible class, meaning it can only be applied to instruments — not to Missions or Programmes.

Browse Categories

1. Go to the Administration application through the topbar.

2. Select Categories in the top-left selector.

3. The table displays all existing categories with their Name, Short Name, and Definition.

Create a Category

1. Go to the Administration application through the topbar.

2. Select Categories in the top-left selector.

3. Click the blue + button in the bottom right of the screen.

4. Enter a Name, Short Name, and Definition.

5. Optionally select Super Categories and Permissible Classes.

6. Click Save.