When working with intricate molecular structures, presenting a clear and accurate visual representation is often a significant challenge. Molecular modelers frequently find themselves grappling with maintaining the clarity of critical features, especially when zooming in and out of complex systems. Fortunately, SAMSON’s label visibility functionality provides an effective solution, helping users keep important structural details clear at all scales.
Why Label Visibility Matters
Labels in SAMSON are powerful tools that highlight essential details, such as atomic names, residue identifiers, or measurement results, directly within the Viewport. However, if all labels are persistently visible, as you delve into larger molecular systems, the visual clarity can suffer. This is where SAMSON’s visibility controls for labels come into play.
Fine-Tuning Visibility for Better Clarity
SAMSON automatically adjusts label visibility based on the zoom level. For instance, when you zoom out, labels attached to smaller components (like atoms) gradually disappear, making way for labels representing larger structures, such as molecules. Conversely, zooming in brings back the labels for finer details. These dynamic adjustments help ensure you only see the information that’s directly relevant at your current view.
If you need more control over when labels appear, you can customize their visibility using SAMSON’s Inspector tool:
- Maximum and Minimum Display Radii: Select a label in the Document view or directly in the Viewport. In the Inspector, adjust the “maximum display radius” and “minimum display radius” values. These radii define the zoom levels at which a particular label becomes visible or hidden.
This fine-tuning ensures that your labels remain meaningful and efficient, enhancing your ability to focus on relevant details during both analysis and presentation.
Practical Example
Suppose you’re working with a protein-ligand complex. At a broader view, you may want labels identifying the ligand and key residues in the binding pocket. When zooming into the binding pocket, SAMSON can dynamically adjust visibility to show labels for specific atoms or bonds within the ligand, providing you with the granularity needed for detailed examination.
This feature empowers you to seamlessly switch between overview and detailed perspectives without overwhelming your Viewport with irrelevant or excessive labels.
How to Access and Modify Label Visibility
Here’s a step-by-step guide to managing label visibility in SAMSON:
- Open the Viewport and select the label you want to configure.
- Navigate to the Inspector interface (accessible via the toolbar).
- Locate the Maximum Display Radius and Minimum Display Radius fields and modify them according to your preferred zoom levels.
- Adjust values incrementally to ensure the label’s behavior aligns with your needs for both overview and close-up visualizations.
The GIF below demonstrates how changing radii parameters in the Inspector dynamically impacts label visibility:

Conclusion
Label visibility control in SAMSON makes your molecular visualizations adaptable and focused, streamlining the process of highlighting relevant details for any scale of analysis. By understanding how to customize display radii, you can ensure your models effectively communicate insights while avoiding unnecessary clutter.
For a deeper dive into label visibility and other powerful features, visit the full documentation here.
SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON at www.samson-connect.net.
