One of the challenges molecular modelers frequently face is organizing and controlling the visual representation of complex molecular data within modeling platforms. With SAMSON, the integrative molecular design platform, users can take advantage of the presentation attribute space in the Node Specification Language (NSL) to efficiently control and customize how nodes are represented on-screen. This blog post will help you grasp the essentials of presentation attributes, unlocking ways to manage node visibility and improve your workflows.
What Are Presentation Attributes?
The presentation attribute space (short name pr) in SAMSON works exclusively with nodes that involve presentation (visual) aspects. These attributes allow you to toggle visibility, manage naming conventions, and refine your node specifications to suit specific visualization needs. You can combine these attributes in NSL expressions to access greater flexibility.
Key Attributes Explained
Let’s take a closer look at some of the important presentation attributes:
pr.h– Hidden: This boolean attribute helps you manage visibility. Usepr.hornot pr.hto filter hidden or visible presentation nodes respectively.pr.n– Name: With the name attribute, you can specify or filter nodes based on a string. For instance,pr.n "A"targets nodes with names exactly matching “A,” whilepr.n "L*"targets nodes with names starting with “L.”pr.selected– Selected: This attribute allows you to isolate nodes that are currently selected in the interface withpr.selected. Conversely, usenot pr.selectedto target nodes that are not selected.pr.sf– Selection Flag: A boolean flag aimed at managing node selection states directly.pr.vf– Visibility Flag: Another boolean attribute to manage visibility states efficiently. For example,pr.vf falsecan be used to hide specific nodes.pr.v– Visible: Use this attribute to directly control whether a presentation node appears in the visualization.
How to Combine These Attributes
The true power of presentation attributes lies in their combination. For example:
- Find all visible, named nodes starting with “Mol”:
pr.v and pr.n "Mol*" - Target nodes that are not hidden but have a visibility flag set to false:
not pr.h and not pr.vf
These queries can help molecular modelers refine their node selection processes and tailor visualizations according to specific research objectives.
How This Solves Common Molecular Modeling Pains
Efficient management of visual complexity is crucial for molecular researchers dealing with intricate multi-node systems. By leveraging SAMSON’s presentation attributes, you simplify multi-layered visual data, home in on specific subsets of nodes by attribute, and apply selective operations for clarity and precision. These tools offer not only control but also an improved sense of focus as you work within your model.
To explore the full documentation on SAMSON’s presentation attributes and their usage, visit SAMSON’s documentation page.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON at samson-connect.net.