Vtkhandler

Derived module from filehandler.py to handle vtk files.

Warning

This module will be deprecated in next releases. Follow updates on https://github.com/mathLab for news about file handling.

class VtkHandler

Bases: pygem.filehandler.FileHandler

Vtk file handler class

Variables

• infile (string) – name of the input file to be processed.

• outfile (string) – name of the output file where to write in.

• extensions (list) – extensions of the input/output files. It is equal to [‘.vtk’].

parse(filename)

Method to parse the file filename. It returns a matrix with all the coordinates.

Parameters

filename (string) – name of the input file.

Returns

mesh_points: it is a n_points-by-3 matrix containing the coordinates of the points of the mesh

Return type

numpy.ndarray

Todo

• specify when it works

write(mesh_points, filename)

Writes a vtk file, called filename, copying all the structures from self.filename but the coordinates. mesh_points is a matrix that contains the new coordinates to write in the vtk file.

Parameters

• mesh_points (numpy.ndarray) – it is a n_points-by-3 matrix containing the coordinates of the points of the mesh

• filename (string) – name of the output file.

plot(plot_file=None, save_fig=False)

Method to plot a vtk file. If plot_file is not given it plots self.infile.

Parameters

• plot_file (string) – the vtk filename you want to plot.

• save_fig (bool) – a flag to save the figure in png or not. If True the plot is not shown.

Returns

figure: matlplotlib structure for the figure of the chosen geometry

Return type

matplotlib.pyplot.figure

show(show_file=None)

Method to show a vtk file. If show_file is not given it shows self.infile.

Parameters

show_file (string) – the vtk filename you want to show.