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Grace at NERSC
Table of Contents
- Description
- Grace is a WYSIWYG 2D plotting tool for the X Window System and M*tif.
- Features.
- More information can be found at the vendor's web site.
- Accessing Grace.
- Grace is available on NERSC platforms via the modules facility.
- Documentation.
- Links to online local documentation (pdf/html format).
- Additional Resources.
- Links to the Grace distribution site, supplemental information, a FAQ page.
- Sample Screen Shots.
Description
Grace is a WYSIWYG tool to make two-dimensional plots of numerical data. It runs under various (if not all) flavors of Unix with X11 and M*tif (LessTif or Motif). It also runs under VMS, OS/2, and Windows (95/98/NT/2000/XP). Its capabilities are roughly similar to GUI-based programs like Sigmaplot or Microcal Origin plus script-based tools like Gnuplot or Genplot. Its strength lies in the fact that it combines the convenience of a graphical user interface with the power of a scripting language. The combination allows grace to perform sophisticated calculations or to perform automated tasks.
Features
General
- WYSIWYG operation.
- 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.
Graphing Flexibility
- 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.
Analysis Capability
- FFT.
- Integration and differentiation.
- Histograms.
- Splines, including Akima splines.
- Interpolation and smoothing.
- Convolution, correlation, and covariation.
- Sorting.
Data Formats
- Unlimited data size; up to six dimensions plus an optional array of strings.
- Reads text data input files.
- Reads 1D netCDF files.
Programmability
- 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.
Customization/Extensibility
- Dynamic module loading - write your own C/Fortran/... modules.
- User-defined colors.
- User-supplied fonts and encodings.
Accessing Grace
- For NERSC machines do:
module load grace
- To execute the program do:
xmgrace
Documentation
Local Online html Documentation 5.1.19:
Local Online html Documentation 5.1.12:
Local Online Tutorial version 5.1.14
Additional Resources
Sample Screen Shots
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