For molecular modelers working with visualization and customization in SAMSON, efficiently presenting molecular data is key. The presentation attribute space in SAMSON’s Node Specification Language (NSL) offers robust options for controlling how molecular nodes appear and behave. In this blog post, we’ll explore how you can leverage presentation attributes to enhance workflows, improve visualization clarity, and organize data effectively.
Why Care About Presentation Attributes?
As a molecular modeler, you often deal with complex systems, which makes intuitive visualization important. Presentation attributes allow you to customize visibility, labels, selection, and more, ensuring your molecular studies are organized and accessible. A commonly faced challenge is efficiently highlighting or hiding specific parts of a molecular system based on the parameters you’re analyzing. That’s where these attributes shine.
Overview of Key Attributes
The presentation attribute space is dedicated to presentation nodes and can be accessed using the short name pr. Below is a summary of some essential attributes to know:
| Attribute | Description | Examples |
|---|---|---|
hidden (h) |
Controls whether a node is hidden. | pr.h or not pr.h |
visible (v) |
Specifies whether a node is visible. | pr.v or not pr.v |
name (n) |
Matches node names using strings. | pr.n "A" or pr.n "L*" |
| selected | Indicates whether a node is selected. | pr.selected or not pr.selected |
selectionFlag (sf) |
Flags a node for selection purposes. | pr.sf or pr.sf false |
visibilityFlag (vf) |
Manages a node’s visibility status. | pr.vf or pr.vf false |
Practical Examples
Let’s look at how these attributes can be applied in practice:
- Highlight visible nodes: Focus only on nodes that are visible to streamline your workflow. Use
pr.vto identify these nodes. - Filter based on name patterns: Find nodes matching specific names like “A” or nodes starting with “L” using
pr.n "A"orpr.n "L*". - Manage selection efficiently: Use
pr.selectedto identify selected nodes, orpr.sf falseto reset specific selection flags.
Inherited Attributes
Did you know that many presentation attributes are inherited from the general node attribute space? For example:
hiddenandvisibleare inherited from the node space.nameinherits the behavior of node.name, but applies it to presentation nodes.
This means you benefit from the same consistency across all node types for these attributes, while tailoring the behavior to presentation-specific elements when needed.
Mastering Visualization in SAMSON
Presentation attributes are a simple yet powerful way to improve your molecular modeling clarity in SAMSON. They allow you to focus on the parts you need, declutter your workspace, and customize what you see and interact with. Whether you’re working on large biomolecules or smaller chemical structures, these tools give you control over how information is displayed and accessed.
For more detailed information, explore the official documentation on presentation attributes at this link.
SAMSON and all SAMSON Extensions are free for non-commercial use. Download SAMSON at https://www.samson-connect.net.