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LEARN ABOUT DEBIAN

viper

VIPER(1)						      General Commands Manual							  VIPER(1)

NAME

       Viper - the simple FEniCS run-time plotter

SYNOPSIS

       viper [OPTIONS]

DESCRIPTION

       Viper is a minimalistic scientific plotter and run-time visualization module. Some its the features includes:

       * Light-weight and minimalistic
       * Extended keybindings
       * Interactive
       * Save as png, VTK
       * 2D and 3D
       * Scalar, vector, and displacement fields
       * Multiple input formats
       * In PyCC mode; direct plotting of NumPy arrays over DOLFIN meshes
       * Can be used as standalone plotting application, or used as part of
	 PyDOLFIN

OPTIONS

       -h, --help
	      Display help text and exit.

       -i file, --input file
	      Specify input file.

       -o file, --output file
	      Specify output file.

       -l lut file, --lut lut file
	      Specify lookup table (LUT) file.

       -d data file, --data data file
	      Specify data file.

EXAMPLE

       Viper has support for visualizing meshes and solutions in DOLFIN:

	    from dolfin import *

	    # Plot a mesh
	    mesh = UnitCube(16, 16, 16)
	    plot(mesh)

	    # Plot a scalar function
	    u = Function("poisson.xml")
	    plot(u)

	    # Plot a vector function as a displacement field
	    d = Function("elasticity.xml")
	    plot(d, mode="displacement")

	    # Save as png
	    p = plot(mesh)
	    p.write_png("mesh.png")

	    # Save as VTK
	    p = plot(u)
	    p.write_vtk("poisson.vtk")

BUGS

       Send comments, questions, bug reports etc. to fenics-viper@lists.launchpad.net.

LICENSE

       This  program  is  free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as pub-
       lished by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY	WARRANTY;  without  even  the  implied	warranty  of  MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.

       You   should   have   received	a   copy   of	the   GNU   Lesser   General  Public  License  along  with  this  program.   If  not,  see
       <http://www.gnu.org/licenses/>.

AUTHOR

       Ola Skavhaug <skavhaug@simula.no>

       This manual page was written by Johannes Ring <johannr@simula.no>.

																	  VIPER(1)

UNIX for Dummies Questions & Answers