---
name: "velvet"
section: "1"
platform: "linux"
package: "felt"
version: "3.06-9"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/velvet"
---

# velvet(1)

X11 based Finite ELemenT design and analysis

## NAME

velvet - X11 based Finite ELemenT design and analysis

## SYNOPSIS

**velvet** \[-*toolkitoption*\] \[-sensitive\] \[+sensitive\] \[-numbers\] \[+numbers\] \[-nodeColor *color*\] \[-elementColor *color*\] \[-toolColor *color*\] \[-labelFont *font*\] \[-toolFont *font*\] \[-nocpp\] \[-cpp *filename*\] \[-D*name*\[=*value*\]\] \[-U*name*\] \[-I*directory*\] \[*filename*\]

## DESCRIPTION

*Velvet* is an X11 based finite element design and analysis package based on the *felt*(1fe) tool and the *felt*(4fe) input file syntax (velvet is smoother than felt).  If *filename* exists then it will be loaded upon startup.  *Velvet* attempts to locate a saved parameter file upon loading an input file.  A saved parameter file has a common prefix with *filename* but a ".vlv" extension.  If *filename* does not exist or is absent then *velvet* will start with an empty problem with the appropriate name.  Details of the mathematics and user interface can be found in the user's guide.

## OPTIONS

In addition to any standard toolkit option, *velvet* accepts the following options:

- **-sensitive**

  Enable sensitive/insensitive menu switching.  *Velvet* has two major modes of operation, normal mode and edit mode.  Each mode allows only certain operations to be performed.  This option allows disabling of the menus controlling the inactive operations.  This is the default behavior but may be inappropriate on a slow server.  Associated resource: \*sensitiveMenus.

- **+sensitive**

  Disable sensitive/insensitive menu switching.  Associated resource: \*sensitiveMenus.

- **-numbers**

  Enable node and element numbering.  This is the default behavior.  Associated resource: \*numbers.

- **+numbers**

  Disable node and element numbering.  Associated resource: \*numbers.

- **-nodeColor** *color*

  Sets the color of nodes and node numbers.  The default color is "blue". Associated resource: \*nodeColor.

- **-elementColor** *color*

  Sets the color of elements and element numbers.  The default color is "black".  Associated resource: \*elementColor.

- **-toolColor** color

  Sets the color of tools (rectangles, lines, circles) and interactive windows. The default color is "red".  Associated resource: \*toolColor.

- **-labelFont** font

  Sets the font used for node and element numbers.  The default font is "5x8". Associated resource: \*labelFont.

- **-toolFont** font

  Sets the font used for text drawn using the tools.  The default font is "fg-22".  Associated resource: \*toolFont.

- **-nocpp**

  Do not use a preprocessor on the input file.

- **-cpp** *filename*

  Use *filename* as a preprocessor on the input file.  The default preprocessor is "/lib/cpp".  Any preprocssor which understands the -D, -U, and -I options can be used as these options are passed to the preprocessor.

## WIDGETS

In order to specify resources, it is useful to know the hierarchy of the widgets which compose *velvet*.  The application defaults files contain (for the most part) fully qualified resource names and should be consulted if the resources are to be changed.

## AUTHOR

*Velvet* was developed by Jason I. Gobat (jgobat@mit.edu) and Darren C. Atkinson (atkinson@ucsd.edu).

## SEE ALSO

corduroy(1fe), felt(1fe), burlap(1fe), felt(4fe).