Best way to draw a sine wave?

You could use javascript and MGraphics here is a little template for send what you draw in a jit matrix :

autowatch = 1;
inlets = 2;
outlets = 1;
setoutletassist(0, "Matrix output");

var w = 720;
var h = 480;
var w2 = w * 0.5;
var h2 = h * 0.5;    

var mgfx = new MGraphics(w,h);
mgfx.init();
mgfx.relative_coords = 0;
mgfx.autofill = 0;

var outmatrix = new JitterMatrix(4, "char", w, h);

function bang() {
    paint();
}

function dim(l) {
    //Redim
    var l = arrayfromargs(arguments, messagename);
    w = l[0];
    h = l[1];
    w2 = w * 0.5;
    h2 = h * 0.5;
    mgfx = new MGraphics(w,h);
    outmatrix = new JitterMatrix(4, "char", w, h);
    gc();

}

// DRAWNING

function paint() {
    var theImage = null;

    with (mgfx) {
        clear_surface(); // Important, allows transparency
        // What you want to draw
        /*
        set_line_width(2);
        set_source_rgb(1.,0.,1.);
        move_to(0, 50);
        line_to(50, 50);
        stroke();
        */
        theImage = new Image(pop_group());
    }

    theImage.tonamedmatrix(outmatrix.name);
    outlet(0, "jit_matrix", outmatrix.name);
    gc(); //Important for memory
}