Graphing with Gnuplot and Xmgr

If you need to graph data, there are two packages available for Linux under X: Gnuplot and Xmgr.
Advanced Xmgr

Once it is in an internal set, the data can be manipulated in many ways. Sets may be edited, deleted, and saved. Arbitrary mathematical functions can be typed in to transform one set to another. Regression, sometime referred to as “curve-fitting”, can be done on a variety of standard curves—polynomial, logarithmic and exponential. Histograms can be created from sets with user-definable bin widths. Many other mathematical operations are supported. Individual data sets (as well as complete graphs) can be saved and loaded.

Xmgr also allows the user to define “regions” entered as polygons determined by mouse clicks. Data points within a region can be extracted from data sets into other data sets or removed from data sets. The regression options may also be set to operate only on the inside or outside of a particular region.

More Information

Gnuplot has its own Usenet newsgroup, comp.graphics.gnuplot. The current version is 3.5. Gnuplot can be downloaded from Gnu ftp sites like prep.ai.mit.edu and its mirrors.

The gnuplot 3.5 distribution comes with a tutorial written in LaTeX. The regular gnuplot documentation can be compiled into several different formats, one of which is the on-line help file. Other formats are a VMS .hlp file, a TeX document, nroff/troff format and an .rtf rich-text format. A man page is also provided, which talks about invocation options and X-resources that are used.

The current version of xmgr is 3.01. Xmgr has a home page located at www.teleport.com/~pturner/acegr/index.html. FAQs, on-line documentation, source and binaries are there. Other pages still have some dangling pointers to the old xmgr home page at ogi.edu, where the mailing list is still hosted.

Andy Vaught (ayndy@maxwell.la.asu.edu) is currently a graduate student in physics at Arizona State University and works part-time for Motorola. When not logged in, he enjoys bicycling, skiing and golf. He is also active in the civil air patrol.

______________________

White Paper
Linux Management with Red Hat Satellite: Measuring Business Impact and ROI

Linux has become a key foundation for supporting today's rapidly growing IT environments. Linux is being used to deploy business applications and databases, trading on its reputation as a low-cost operating environment. For many IT organizations, Linux is a mainstay for deploying Web servers and has evolved from handling basic file, print, and utility workloads to running mission-critical applications and databases, physically, virtually, and in the cloud. As Linux grows in importance in terms of value to the business, managing Linux environments to high standards of service quality — availability, security, and performance — becomes an essential requirement for business success.

Learn More

Sponsored by Red Hat

White Paper
Private PaaS for the Agile Enterprise

If you already use virtualized infrastructure, you are well on your way to leveraging the power of the cloud. Virtualization offers the promise of limitless resources, but how do you manage that scalability when your DevOps team doesn’t scale? In today’s hypercompetitive markets, fast results can make a difference between leading the pack vs. obsolescence. Organizations need more benefits from cloud computing than just raw resources. They need agility, flexibility, convenience, ROI, and control.

Stackato private Platform-as-a-Service technology from ActiveState extends your private cloud infrastructure by creating a private PaaS to provide on-demand availability, flexibility, control, and ultimately, faster time-to-market for your enterprise.

Learn More

Sponsored by ActiveState