> "Graphs", however, > have an entirely different meaning in mathematics.
When i was speaking about the Graph Library I meant the algorithmistsc implementation of a powerfull package for operations with graphs as mathematical object (graph - a set of vertexes, and a set of edges and a function which for two given vertexes returns "true" if they are "connected" ) ----- Original Message ----- From: "Paul Libbrecht" <[EMAIL PROTECTED]> To: "Jakarta Commons Developers List" <commons-dev@jakarta.apache.org> Cc: <[EMAIL PROTECTED]> Sent: Monday, June 13, 2005 11:33 PM Subject: Re: [math] FW: [interest in] SummerOfCode2005 "commons-math" project > Interesting. > I did not know of Krysalis Wings... > There's a difference between a graph plotter and a chart plotter: the > source data. To me a chart-plotter is fed by a bunch of numbers whereas > a graph-plotter is fed by a bunch of functions. From Krysalis Wings > site: > > > Note > > "Charts" are what some office suites call "graphs". "Graphs", however, > > have an entirely different meaning in mathematics. Hence we prefer to > > use the term "charts". > > You could say that "generating the numbers would be sufficient". It's > not. > A good graph plotter detects the cusps and other irregularities so that > it does not, for example, join -infty to +infty by a line like any > chart plotter would do. Caching the result for redraw (e.g. with good > Java 2D objects) might also be a challenge of a graph-component... > > That characteristic is probably a very high requirement and is probably > the reason why it's mostly only found in more general purpose > computer-algebra-systems.... > > Rostyslav, does your plotter achieve this ? > (was it a graph-plotter or a chart-plotter?). > > paul > > > Le 13 juin 05, à 22:13, J.Pietschmann a écrit : > > Paul Libbrecht wrote: > >> I fear it's off-goal but we took some time here to look for a > >> graph-plotter, either Swing component or picture generator, that > >> would be open-source, tested on several platforms. Well... we found > >> none ! > > > > That's interesting. Is the evaluation published somewhere? Or > > could you put it into the Wiki: the packages evaluated, and > > why they didn't fit your requirements? > > I was under the impression JFreeChart is almost as good or better > > than gnuplot, but I never took a really close look at it. There's > > also Krysalis Wings... > > > > J.Pietschmann > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
