• Ngraph is a program creating scientific 2-dimensinal graphs for researchers and engineers.
• Ngraph reads numerical data from a flexible text file, and plots it in the graph.
• Ngraph can create the graph sutable for presentations and for papers.
• Ngraph also assists data analysis.
• Sorry, English documents are NOT still available.

• Windows 95/98, Windows NT/2000/XP/VISTA (freeware).
• Linux, BSD, Unix (freeware, GNU General Public License).

• Easy to use due to graphical user interface.
• High operativity due to multi window interface.
• Plot with broken lines, marks (90 kinds), curves (spline and B-spline interpolation), arrows, rectangles, error bars, bars, etc.
• Fitting by n-th polynomial or user defined math functions.
• Fitting with weight by any math function.
• Data conversion by math expression.
• File output of converted data.
• Evaluation, mask, and movement of the plotted data.
• Linear plot, semi-log plot, log-log plot.
• Two or more graphs are created in a page.
• Linkage of the axis scale in multi graph.
• Appending the (saved) graph to the current graph.
• Saving graph with data attached.
• Zooming, trimming, undoing of the axis scale.
• Grid is added to the axis.
• Automatic setup of the axis scale.
• Detailed setup of gauging and numbering for axis.
• Legend by lines, curves, polygons, rectangles, ellipses, marks, texts.
• High functional text legend such as a display of date, file name, contents of the data file, etc.
• Automatic legend creation.
• Legend by a parabola, gauss function, Lorentz function, and sin function.
• Automatic legend creation of fitting results.
• Fixed form processing by add-in scripts.
• Automatic processing by scripts.
• Export via clip board and meta file (Windows version).
• Compact PostScript file creation (suitable for electrical submition).
• Export via original simple graphics file.
• Perfect data compatibility between Windows and Unix.

Windows version	Linux version