Chappati
Java-based Data Graphing Software
Chappati Home
Cette page en français
David Rand, 18th October 2011
Chappati is a simple free data graphing tool, developed in Java, thus running on
all popular computer platforms (Windows, Macintosh, UNIX, Linux). Given a list or matrix
of numeric data, it draws various types of graphs:
- Y Graph
a two-dimensional plot based on a list of numbers (Y values).
- X-Y Graph
a two-dimensional plot based on a list of pairs of numbers (X, Y).
- X-Y Graph by Date
an X-Y graph in which the X values are dates.
- Contour Plot
a graph of contours based on a two-dimensional matrix of elevations (Z values).
- Pie Chart
based on a list of key-number pairs (each key being alphanumeric).
- Bar Chart
based on a list of key-number pairs (each key being alphanumeric).
- Stacked Bar Chart
based on a list of primary keys, each having a list of key-number pairs.
- Histogram
based on a list of non-negative numbers.
The actual drawing of the graphs is done either using Chappati's own internal graphic engine,
or using the JFreeChart framework.
Graphics drawn by JFreeChart often provide a somewhat more polished result,
except for contour plots where Chappati's internal engine is superior.