Use a Partition dataset (), select from the More Datasets submenu, to partition a domain with respect to a set of isolevels and add elements corresponding to the isosurfaces or contours. It is also possible to use a Partition dataset as the source for a mesh import (see Import). It is then the result of the evaluation of the Partition dataset that is used.

From the Entry method list, choose Number of levels (the default) and then enter the total number of levels in the Total levels field (default: 1) and clear or select the Round the levels check box (selected by default) if desired. Alternatively, choose Levels and then enter the desired isolevels in the Levels field.

By default, the Geometry level list is set to Take from dataset. If desired, choose Volume, Surface, Line, or Point instead. The Propagate to lower dimensions check box is selected by default; clear it if you do not want the partitioning to propagate.

Select a data Smoothing method — None, Inside material domains (the default, for smoothing within domains shared by the same material but not across material boundaries), Inside geometry domains (for smoothing within each geometry domain but not across interior boundaries), Everywhere, or Expression. If you choose Expression, enter an expression in the Expression field such that smoothing occurs where the expression is continuous. The default expression is dom, the domain variable, which is equivalent to the Internal smoothing. You can also — in a surface plot, for example — use material.domain, which is an indicator variable for domains that share the same material (see Material Group Indicator Variables) and is equivalent to the Inside material domains setting. For all Smoothing methods except None, you can also choose smoothing threshold, if needed. From the Smoothing threshold list, select None (the default), or select Manual to enter a relative smoothing threshold value (default: 0.1) in the Threshold field. The Use derivatives check box controls whether cubic (Hermite) interpolation is used when applying the filter and is selected by default.

Under Advanced, define the name of the Part variable: By default, it is part1part. It evaluates to 0, 1, and so on for the parts that the geometry is split into. For example, you can create a surface plot of part1part to visualize that numbering.