Saved Subsets

Core Feature

This feature is available in all MATISSE Explorer deployments.

Saved Subsets allow you to save, name, and reuse subset configurations. This is useful for complex subsets you use repeatedly or for sharing subset settings across sessions.

What are Saved Subsets?

A saved subset stores:

• All subset conditions (column, lasso, signature)
• Condition groups and their operators
• Subset mode settings

When you load a saved subset, it restores the exact subset configuration you saved.

Saving a Subset

Step 1: Configure Your Subset

First, set up the subset you want to save:

1. Open the Subset Panel
2. Add conditions as needed
3. Configure all settings
4. Verify the subset works as expected

Step 2: Save the Subset

1. Click the Save button in the Subset Panel
2. The subset is saved and the name field becomes editable
3. Enter a descriptive name for your saved subset
4. Press Enter or click outside to confirm the name

Naming Tips

Use descriptive names that indicate:

• What the subset selects (e.g., "T cells in Region A")
• The purpose (e.g., "QC: High quality cells")
• Key criteria (e.g., "CD8+ high expression")

Loading a Saved Subset

Step 1: Open Saved Subsets List

1. In the Subset Panel, look for Saved Subsets section
2. Click to see available saved subsets

Step 2: Select and Load

1. Click on the saved subset you want to load
2. The subset configuration is restored
3. The subset applies to the current view
4. The saved subset name appears as a badge in the Subset Panel search bar, indicating which saved subset is currently active

Note: Loading a saved subset replaces the current subset configuration.

Managing Saved Subsets

Rename a Saved Subset

Each saved subset displays direct action buttons for quick access:

1. Find the saved subset in the list
2. Click the Rename button (pencil icon) next to the subset name
3. Enter the new name
4. Confirm the change

Delete a Saved Subset

1. Find the saved subset in the list
2. Click the Delete button (trash icon) next to the subset name
3. Confirm deletion

Warning: Deleted saved subsets cannot be recovered.

Update a Saved Subset

To update an existing saved subset with new settings:

1. Load the saved subset
2. Modify the subset as needed
3. Save with the same name (if overwrite is supported)
4. Or save as a new subset and delete the old one

Saved Subset Storage

Where Saved Subsets are Stored

Saved subsets are stored in your browser's local storage:

• Saved subsets persist across browser sessions
• Saved subsets are specific to each project
• Clearing browser data will remove saved subsets

Limitations

• Saved subsets are not automatically synced across devices
• Saved subsets do not transfer between browsers
• Large numbers of saved subsets may impact storage

Use Cases

Repeated Analysis

Save subsets for populations you analyze frequently:

• "All T cells"
• "Tumor region cells"
• "High quality subset"

Workflow Steps

Create saved subsets for each step in your analysis:

• "Step 1: Remove doublets"
• "Step 2: Filter low quality"
• "Step 3: Focus region"

Comparison Views

Save subsets to quickly switch between views:

• "Region A cells"
• "Region B cells"
• "Control vs Treatment"

Tips for Using Saved Subsets

Organize with Naming Conventions

Use consistent naming:

• Prefix by category: "QC: ...", "Analysis: ...", "Region: ..."
• Include key parameters: "CD8+ > 1.0"
• Add version numbers if iterating: "T cells v2"

Start with Simple Saved Subsets

Build a library of simple, reusable saved subsets:

• Single cell type subsets
• Common quality subsets
• Frequently used regions

Combine with Workflows

Document which saved subsets to use for specific analyses in your notes.

Troubleshooting

Saved Subset Won't Load

• Check if the saved subset uses columns that exist in current data
• Verify lasso conditions reference available projections
• Some saved subsets may not work across different datasets

Saved Subset List Empty

• Saved subsets may have been cleared with browser data
• Check if you're in the correct project
• Ensure saved subsets were saved successfully

Saved Subset Gives Unexpected Results

• Reload the saved subset to reset configuration
• Check if data has changed since saved subset was created
• Verify all conditions are still valid

Related Topics

• Subset - Subset configuration
• Lasso Selection - Creating spatial conditions