anyone?
> On 01. Jan 2017, at 19:40, Till Bovermann <lf...@lfsaw.de> wrote: > > Dear list, > > forgive the (seeming) ignorance of a very nOOb faust learner who just > stumbled (again) into the world of functional programming... > After watching the majority of the screencast by Romain (thanks!) [1], I > wanted to implement a, what I thought, simple differential equation system in > faust: A Lotka-Volterra chaotic attractor (3rd order DE). > > I got as far as pasted below but get an error that tells me that I am > obviously doing something wrong in the array (or vector?) accessing. > If someone could please help me out? > > > thanks and a wonderful day! > Till > > [1] https://ccrma.stanford.edu/~rmichon/faustWorkshops/course2015/ > > > ------------------ > > The code below throws this error: > > ERROR : pattern matching failed, no rule of case {(<xs>,<xxs>,<nn>) => > take(xxs,nn,1 : -); (<xs>,1) => xs; (<xs>,<xxs>,1) => xs; } matches argument > list (1,1 : +,0) > > > > ///////////////// > > import("stdfaust.lib"); > > // tools > at(i, x) = ba.take(i+1, x); > > > > // chaotic attractor found by Arneodo, Coullet and Tresser > // see Flake (1998): "The Computational Beauty of Nature", p. 187 > > alpha = hslider("alpha",0,0,1,0.01) : si.smoo; > > > // A = [[0.5, 0.5, 0.1], [-0.5, -0.1, 0.1], [\alpha, 0.1, 0.1]] > > A(0) = 0.5, 0.5, 0.1; > A(1) = -0.5, -0.1, 0.1; > A(2) = alpha, 0.1, 0.1; > > > // dx_i/dt = x_i sum_j=1^n (A_ij (1-x_j)) > > // dx_i/dt > dxdti(x, i) = at(i, x) * sum(j, 3, (at(j, A(i)) * (1 - at(j, x)))); > > // dx/dt > dxdt(x) = par(i, 3, dxdti(x, i)); > > > process = 0, 0, 1 : +~ dxdt; > > > ///////////////// > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Faudiostream-users mailing list > Faudiostream-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/faudiostream-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Faudiostream-users mailing list Faudiostream-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/faudiostream-users
