I am trying to display some text in this loop it just displays "Undefined" can you help ? please

[putilatex]

var eclipticWidth = 0.75;
var ast = [ "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l" ];

function zodiacSigns() {

  function toRadians(x) {
    return x * (Math.PI / 180);
  }

  function toDegRad(x, f) { return toRadians(x * f); }

  let i = 0;
  while (i <= 60) {

    var Lep = Re - Re * eclipticWidth;
    var f = 12;
    var b = 2.51284;
    var d  = toDegRad(i,f);
    var sd = Math.sin(d);
    var a  = 0.275 * clockRadius;
    var Re = (a * (Math.sqrt((b * b) - (sd * sd)) + Math.cos(d))) - 3.9;

    var factA = hourAries + d;
    var sinfactA = Math.sin(factA);
    var cosfactA = Math.cos(factA);
    var xd = xc + Re * sinfactA;
    var yd = yc - Re * cosfactA;
    var xf = xc + (Re - Lep) * sinfactA;
    var yf = yc - (Re - Lep) * cosfactA;

    var sign = ast[Math.floor(16 - i)];

    var zodiac = new Two.Text(sign , (xd + xf) / 2, (yd + yf) / 2);

    zodiac.family = '"Helvetica"';
    zodiac.weight = "normal";
    zodiac.size = "20";
    zodiac.fill = "#2E8B57";
    zodiac.noStroke = "#2E8B57";

    two.scene.add(zodiac);

    i = i + 2.5;
  }
}

zodiacSigns();

[jonobr1]

I haven't run your code, but it looks like the culprit is line 31 var sign = ast[Math.floor(16 - i)];. There will only be 16 of 60 entries that could result in an astrological sign. If you'd like to cycle through all signs then using you might want to consider using Modulo like so:

var sign = ast[Math.floor(i % ast.length)];

Hope this helps!