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 published 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 MERCHANTABILITY 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>.

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