base class, extends NXobject


Computational geometry description of isocontouring/phase-fields in Euclidean sp ...

Computational geometry description of isocontouring/phase-fields in Euclidean space.

Iso-contouring algorithms such as MarchingCubes and others are frequently used to segment d-dimensional regions into regions where intensities are lower or higher than a threshold value, the so-called isovalue.

Frequently in computational materials science phase-field methods are used which generate data on discretized grids. Isocontour algorithms are often used in such context to pinpoint the locations of microstructural features from this implicit phase-field-variable-based description.

One of the key intentions of this base class is to provide a starting point for scientists from the phase-field community (condensed matter physicists, and materials engineers) to incentivize that also phase-field simulation data could be described with NeXus, provided base classes such as the this one get further extend according to the liking of the phase-field community.


The symbols used in the schema to specify e.g. dimensions of arrays.

d: The dimensionality of the description.

Groups cited:



dimensionality: (optional) NX_POSINT {units=NX_UNITLESS}

isovalue: (optional) NX_NUMBER {units=NX_ANY}

The threshold or iso-contour value.

grid: (optional) NXcg_grid

The discretized grid on which the iso-contour algorithm operates.

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List of hypertext anchors for all groups, fields, attributes, and links defined in this class.

NXDL Source: