Modifying the Source/Selection Filter (Classification Tools)

A Source Selection Filter defines which points are eligible for selection and classification when using LP360 classification tools. It does not control what points are displayed—that role is handled by Live View display filters, including Stored Filters.

In current versions of LP360, Source Selection Filters are implemented as named filters created and managed in Live View . These named filters may also be saved and reused as Stored Filters for display purposes.

Source Selection Filters are used consistently by classification tools across the application, including:

• Classification tools in the Profile Window
• Classification tools on the Classification tab
• Classify within Polygon in the Immersive View (uses the Source Selection Filter on the Classification tab)

This unified approach replaces older, single use behavior.

Learn more about Using a Stored Filter

How Source Selection Filters Work

By default, points must satisfy both of the following in order to be classified:

• Live View display filter – controls which points are visible 
• Source Selection Filter  – controls which visible points are selectable

Only points that pass both filters can be selected and classified.

Important:
Points that are filtered out of the display cannot be selected or classified unless Classify Non-Visible Points is enabled.

Classify Non-Visible Points

LP360 provides a Classify Non-Visible Points toggle that allows classification to be driven only by the Source Selection Filter, regardless of whether points are currently visible.

This is useful when certain classes (for example, Water or Noise) are hidden for clarity but still need to be classified using polygon, paint, or profile tools.

When enabled:

• Points that pass the Source Selection Filter will be classified even if they are not visible
• Non-visible points will still highlight when affected by a classification tool

Learn more about Classifying Non-Visible Points 

Creating and Managing Source Selection Filters

Source Selection Filters are created as named filters in Live View .

To create or modify a Source Selection Filter:

1. Open Live View
2. Configure the desired point constraints (classification, returns, elevation, intensity, point source ID, scan angle, etc.)
3. Save the configuration as a named filter
4. Use that named filter as the Source Selection Filter for classification tools

Live View filters are live and persistent—changes apply immediately wherever the filter is used.

Learn more about using Live View

Where Source Selection Filters Are Used

Profile Window

Classification tools in the Profile Window use the active Source Selection Filter to determine which profile points can be selected and classified.

Common tools include:

• Classify Above Line
• Classify Below Line
• Paintbrush classification
• Classify within Polygon

Learn more about the Profile Window

Classification Tab

Classification tools accessed from the Classification tab honor the active named Source Selection Filter.

This includes polygon, paintbrush, and line-based classification tools.

Learn more about the Classification Tools

Immersive View – Classify by Polygon

The Classify within Polygon tool in Immersive View uses the same Source Selection Filter defined on the Classification tab.

No separate filter configuration exists for Immersive View.

Example of the Source/Selection Filter

Selecting Points Around an Object using an Elevation Mask

Points Committed to a "Reserved" Class

Best Practices

• Keep Live View display filters broader than Source Selection Filters
• Use named Live View filters to standardize classification behavior
• Enable Classify Non-Visible Points only when intentionally classifying hidden data
• Manage selection logic in Live View, not within individual tools

Summary

• Source Selection Filters are named Live View filters
• They control which points can be selected and classified, not visibility
• They are shared across Profile Window tools, Classification tab tools, and Immersive View
• Classify Non-Visible Points allows classification driven solely by the Source Selection Filter