2.1.16. geom_rescale


Purpose

Scales a geometry description independently in x, y, and z direction in terms of grid and/or size. Either absolute values or relative factors (like "0.25x") can be used.

parent_gray

Usage

> geom_rescale options Geom file(s) 

parent_gray

Options

-g / --grid [ unchanged ]
a,b,c grid of hexahedral box
-s / --size [ unchanged ]
x,y,z size of hexahedral box
-r / --renumber [ False ]
renumber microstructure indices from 1..N


parent_gray

Examples

original
Figure 1: Initial geometry of 10 grains discretized on a 48 x 48 x 48 grid with a size of 1.0 x 1.0 x 1.0.
Figure 1 presents the original geometry used in below examples.

Grid

> geom_rescale --grid 12 12 12 < plainGrains.geom > quarterGrains.geom

or alternatively with factors of 1/4:
> geom_rescale --grid 0.25x 0.25x 0.25x < plainGrains.geom > quarterGrains.geom

after grid rescaling
Figure 2: Geometry after rescaling the grid to 12 x 12 x 12 and maintaining the size of 1.0 x 1.0 x 1.0.

This example demonstrates rescaling in order to coarsen the spatial resolution by a factor of four. The grid is changed from an original 48 x 48 x 48 to 12 x 12 x 12 as shown in Figure 2.

Size

> geom_rescale --size 1.0 1.0 0.5 < quarterGrains.geom > squashedGrains.geom

after additional size rescaling
Figure 3: Grid-rescaled geometry after additional rescaling of the size to 1.0 x 1.0 x 0.5 and maintaining a grid of 12 x 12 x 12.

The next example shows how to rescaling the size of a geometry without altering the grid point number.

--size 1.0 1.0 0.5 (or alternatively --size 1x 1x 0.5x) halves the size of the box along the z direction as illustrated in Figure 3.

This topic: Documentation > Processing > PreProcessing > GeomRescale
Topic revision: 06 Jul 2016, MartinDiehl
This site is powered by FoswikiCopyright by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding DAMASK? Send feedback
§ Imprint § Data Protection