JRobin

The high-level RRD logic was clearly separated from
low-level I/O operations. By default the java.nio.*
library is now used for fast disk access, improving
speed by at least 2-3 times. Support for RRDTool's
XPORT command was added. The graph package now
includes setResolution(), setLowerLimit(), and
setLazy() methods, new rendering options, a new
datasource type (SDEF), graph template
enhancements, and several new demo and utility
applications.

This release features significant performance improvements, a new aggregation function for the gprint directive, display of transfer speed rates and total bytes transferred on the same graph, new constant values for RPN expressions, an option to set the first day of the week for a graph definition, support for devices running SNMP on a non-standard port, and several bugfixes.

This release can create RRD files and graphs from XML
template files. An RrdToolkit class that can add,
update, and remove data sources and archive
definitions in existing RRD files on the fly was added.
The RrdDbPool class was redesigned. It is now also
possible to plot a time series without using an RRD
file. The "Inspector" application was greatly improved,
and a new command line utility for converting your old
RRDTool files to the JRobin native format in bulk was
included.

A method to specify the entire image size is provided. A bug with MAX values in gprint() statements has been fixed.

This version adds a method to specify custom labels for
the horizontal axis, and a method to specify the
horizontal axis title. It resolves a bug in graphs with
several stacked plots, and a bug with graph anti-aliasing.