Mastering Label Attributes in SAMSON’s NSL

An In-Depth Guide to Label Attributes in SAMSON

Molecular modelers often face challenges when managing and customizing elements within complex molecular structures. One of the common frustrations is efficiently filtering, labeling, and identifying components in models. Thankfully, SAMSON, the integrative molecular design platform, offers a versatile solution through the label attribute space within its Node Specification Language (NSL). Understanding how to leverage these label attributes can make your modeling process more streamlined and insightful.

In this blog post, we’ll dive into the functionality of label attributes, explaining their purpose, possible values, and how to use them effectively.

What Are Label Attributes?

The label attribute space in NSL (short name: la) specifically targets label nodes—elements that help you annotate or organize molecular structures. These attributes enable you to manage visibility, naming conventions, selection states, and more, giving you fine-grained control over your molecular annotations. This is especially useful for projects involving large, intricate datasets where clarity is crucial.

Key Attributes and How They Work

Here’s a detailed overview of some essential label attributes you can work with:

Attribute	Short Name	Possible Values	Example Usage
hidden	`h`	`true`, `false`	`la.h` `not la.h`
name	`n`	Strings (quoted)	`la.n "MyLabel"` `la.n "L*"`
selected	N/A	`true`, `false`	`la.selected` `not la.selected`
selectionFlag	`sf`	`true`, `false`	`la.sf false` `la.sf`
visibilityFlag	`vf`	`true`, `false`	`la.vf false` `la.vf`
visible	`v`	`true`, `false`	`la.v` `not la.v`

Use Case Examples

Imagine working on a molecular model containing hundreds of annotations. Here’s how some of these attributes could simplify your workflow:

Making Hidden Elements Visible: Use la.h or not la.h to quickly locate hidden labels affecting your project’s visibility.
Targeting Specific Labels: Filter elements by name with patterns like la.n "L*", helping you locate labels quickly based on naming conventions.
Toggling Selection States: The selected and selectionFlag attributes allow efficient toggling of label selection, streamlining bulk operations.

A Practical Tip

By combining these attributes, you can create highly customized NSL queries, speeding up processes like filtering or toggling visibility at scale. For instance, a query like not la.selected and la.v finds all visible labels that you need to select for batch editing.

Conclusion

Label attributes in SAMSON’s Node Specification Language offer precise control for molecular modelers, simplifying tasks that would otherwise be manual and time-consuming. To explore all attribute properties and their applications in more depth, visit the official documentation page.

SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON here: https://www.samson-connect.net.