pst-func – PSTricks pack­age for plot­ting math­e­mat­i­cal func­tions

pst-func is a pack­age built for use with PSTricks. It pro­vides macros for plot­ting var­i­ous math­e­mat­i­cal func­tions: – poly­no­mi­als and their deriva­tives f(x)=an*x^n+an-1*x^(n-1)+...+a0 de­fined by the co­ef­fi­cients a0 a1 a2 ... and the deriva­tive or­der; – the Fourier sum f(x) = a0/2+a1­cos(omega x)+...+b1sin(omega x)+... de­fined by the co­ef­fi­cients a0 a1 a2 ... b1 b2 b3 ...; – the Bes­sel func­tion de­fined by its or­der; – the Gauss func­tion de­fined by sigma and mu; – Bézier curves from or­der 1 (two con­trol points) to or­der 9 (10 con­trol points); – the su­perel­lipse func­tion (the Lamé curve); – Che­by­shev poly­no­mi­als of the first and sec­ond kind; – the Thomae (or pop­corn) func­tion; – var­i­ous in­te­gra­tion-de­rived func­tions; – nor­mal, bi­no­mial, pois­son, gamma, chi-squared, stu­dent's t, F, beta, Cauchy and Weibull dis­tri­bu­tion func­tions and the Lorenz curve; – the Va­sicek func­tion for de­scrib­ing the evo­lu­tion of in­ter­est rates; and – im­plicit func­tions.
The plots may be gen­er­ated as vol­umes of ro­ta­tion about the X-axis, as well.