`bempp.api.grid.io`¶

Routines for import and export.

Module Contents¶

`import_grid`(filename)	Import a grid.
`export`(filename[, grid, grid_function, data_type, ...])	Export grids and grid functions.
`_transform_array`(a[, mode])	Transform a data array.

bempp.api.grid.io.import_grid(filename)¶

Import a grid.

This routine uses the meshio library to export grids. A number of types are supported, including vtk, vtu, gmsh, dolphin xml. For a full list see

bempp.api.grid.io.export(filename, grid=None, grid_function=None, data_type=None, transformation=None, write_binary=True)¶

Export grids and grid functions.

This method internally uses the meshio library. For a full list of supported data types see

Note that export of domain indices is only possible for Gmsh (.msh) format files.

filenamestring: The name of the file to write out. The data type is chosen based on the file ending.
gridGrid object: A grid object to export.
grid_functionGridFunction object: Grid function to export
data_typestring: Either ‘node’ for vertex data or ‘element’ for data at element centers.
transformationstring or callable: One of ‘real’, ‘imag’, ‘abs’, ‘log_abs’, None or a callable object. Transforms the data on input. A callable must return numpy arrays with the same number of dimensions as the input. If transformation is None the data is not modified.
write_binaryBoolean: Use binary format (write_binary=True) for the data if supported by the file format.

bempp.api.grid.io._transform_array(a, mode=None)¶

Transform a data array.

anp.ndarray: Either a scalar array or a two dimensional data array.
modestring, callable or None: One of ‘real’, ‘imag’, ‘abs’, ‘log_abs’, ‘abs_squared’, a transformation callable or None. The callable needs to take an input array of dimension 2 and return an array of dimension 2. If mode is None the input array is not modified.