LC Hotline: 2-4531

From offsite: (925) 422-4531



8am–12pm, 1–4:45pm
B453 R1103 | Q-clearance area




Grace is a WYSIWYG 2D plotting tool for the X Window System and M*tif. Grace is the successor to ACE/gr, also known as Xmgr.

Grace Features at a Glance


  • WYSIWYG design
  • Convenient point-and-click graphical user interface
  • Precise control of graph features
  • True publication quality
  • Graphs refresh almost instantly

Export Options

  • Exports high-resolution graphics to (E)PS, PDF, MIF, and SVG formats
  • Supports cross-platform PNM, JPEG and PNG formats
  • Device-independent Type1 font rastering, including anti-aliasing, ligatures and kerning


  • Unlimited number of graphs, unlimited number of curves on a graph
  • Up to 256 customizable colors, 9 dashed line styles, 32 fill patterns, 10 built-in marker symbols; plus, any character glyph from any font can be used as a marker
  • Color/fill markers, text annotations with subscripts, superscripts, mixed fonts, styles and colors and more complex typesetting

Curve Fitting

  • Linear and nonlinear least-squares
  • Calculation and display of residuals
  • Arbitrarily complex user-defined fitting functions, including dynamically loadable C/Fortran/... modules
  • Fitting with constraints
  • Region restrictions
  • Fitting with arbitrary weight functions

Data Analysis

  • FFT, integration and differentiation, histograms, splines, including Akima splines, interpolation and smoothing, convolution, correlation, covariation, sorting

Data Formats

  • Unlimited data size; up to six dimensions plus an optional array of strings
  • Reads text data input files, 1D netCDF files


  • Built-in programming language
  • Math functions manipulate entire array
  • Variables, including arrays (1D)
  • User-definable functions via loadable modules
  • All aspects of plot outlook can be programmed
  • Controllable by external programs


  • Dynamic module loading - write your own C/Fortran/...
  • User-defined colors
  • User-supplied fonts and encodings


Machines and Versions

See LC graphics software page.




no special settings are needed to run Grace at LLNL. The setting of environment variables is done automatically.


Just type xmgrace .


There are links to the FAQ, User's Guide, a tutorial, and mailing list archives at
The developers of the software seem very receptive to feedback if one is diligent in first reading the FAQ and other docs before asking questions.

Help is available from the, (925) 422-4531.


RPM's, source and binary distributions are available at


Grace Home Page