ChemCell WWW Site - ChemCell Documentation - ChemCell Commands

dimension command


dimension species-ID value 


dimension Ca 3
dimension receptor* 2 


Set the dimensionality for one or more particle species. A value of 3 means the particles diffuse volumetrically. A value of 2 means the particles diffuse on a surface; see the region or triangles command.

The species-ID can contain a single wildcard character * which will match species and alias names in the usual way. E.g. species-ID can be *, ab*, *ab, ab*cd.


The dimensionality of a species cannot be changed if particles of that species already exist.

This command can only be used for spatial simulations.

Related commands: none


Dimension = 3 for all species.