@sgratzl/science/src/lin/transpose.js

Scientific and statistical computing in JavaScript.

export default function transpose(a) {
  var m = a.length,
      n = a[0].length,
      i = -1,
      j,
      b = new Array(n);
  while (++i < n) {
    b[i] = new Array(m);
    j = -1; while (++j < m) b[i][j] = a[j][i];
  }
  return b;
};