2.1.16. geom_rescale

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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.

Usage

  > geom_rescale options Geom file(s) 
  

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

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Examples

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

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

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.