andrea valle venit, vidit, dixit 2006-08-28 11:51: > Hi to all, > > I have to generate a figure of a limacon: > http://mathworld.wolfram.com/Limacon.html > > First, my math knowledge is really approximate... > Then, I guess I need polar coordinates. > mmmhhh, no way here... > > Of course, I can google for it but I prefer to use PyX > > Some ideas?
Of course I could provide you with the complete code, but I guess pointing you at http://pyx.sourceforge.net/examples/graphs/lissajous.html will teach you more. Can't help it, being a dad and a teacher ;) You may want to call your parameter t (for theta) instead of k, and keep in mind that x=r*cos(t) and y=r*sin(t) for polar coordinates, where r=b+a*cos(t) for the Limaçon. Remember to read the full description of the example above, especially regarding the issue of "context" if you want to specify a and b as parameters. Cheers, Michael ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ PyX-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/pyx-user
