In ChimeraX, models include atomic structures, molecular surfaces, pseudobond models, volume data, marker sets, and graphical objects, for example, those read from BILD format. A model can be read from a file, derived from another model, or created from scratch.
Model numbers can be assigned automatically or specified by the user. They are hierarchical, with any number of levels (positive integers N, N.N, etc.); for example, #1.1, #1.2, ... #1.10 could be 10 structures in an NMR ensemble. A submodel (model at a lower level) is still an entire model, but the hierarchy allows grouping. Models that are grouped automatically include:
Model names and/or numbers (and thus groupings) can be changed with the rename command.
Like other tools, the Model Panel can be opened from the Tools menu (more...). It lists the current models, with columns:
Disclosure triangles allow collapsing/expanding the hierarchy when multiple levels are present.
One or more entries (rows) can be highlighted with the mouse. Buttons on the right act on only the highlighted entries, or if none are highlighted, all entries:
The corresponding command is shown in the Log.
See also: Molecule Display Toolbar, Density Map Toolbar