Ejemplo n.º 1
0
 public StringBuilder toString(StringBuilder sb, String[] fs, long idx) {
   Vec vecs[] = vecs();
   for (int c = 0; c < fs.length; c++) {
     Vec vec = vecs[c];
     if (vec.isEnum()) {
       String s = "----------";
       if (!vec.isNA(idx)) {
         int x = (int) vec.at8(idx);
         if (x >= 0 && x < vec._domain.length) s = vec._domain[x];
       }
       sb.append(String.format(fs[c], s));
     } else if (vec.isInt()) {
       if (vec.isNA(idx)) {
         Chunk C = vec.elem2BV(0); // 1st Chunk
         int len = C.pformat_len0(); // Printable width
         for (int i = 0; i < len; i++) sb.append('-');
       } else {
         try {
           sb.append(String.format(fs[c], vec.at8(idx)));
         } catch (IllegalFormatException ife) {
           System.out.println("Format: " + fs[c] + " col=" + c + " not for ints");
           ife.printStackTrace();
         }
       }
     } else {
       sb.append(String.format(fs[c], vec.at(idx)));
       if (vec.isNA(idx)) sb.append(' ');
     }
     sb.append(' '); // Column seperator
   }
   sb.append('\n');
   return sb;
 }
Ejemplo n.º 2
0
  @Test
  public void test() {
    Frame frame = null;
    try {
      Futures fs = new Futures();
      Random random = new Random();
      Vec[] vecs = new Vec[1];
      AppendableVec vec = new AppendableVec(Vec.newKey(), Vec.T_NUM);
      for (int i = 0; i < 2; i++) {
        NewChunk chunk = new NewChunk(vec, i);
        for (int r = 0; r < 1000; r++) chunk.addNum(random.nextInt(1000));
        chunk.close(i, fs);
      }
      vecs[0] = vec.layout_and_close(fs);
      fs.blockForPending();
      frame = new Frame(Key.<Frame>make(), null, vecs);

      // Make sure we test the multi-chunk case
      vecs = frame.vecs();
      assert vecs[0].nChunks() > 1;
      long rows = frame.numRows();
      Vec v = vecs[0];
      double min = Double.POSITIVE_INFINITY, max = Double.NEGATIVE_INFINITY, mean = 0, sigma = 0;
      for (int r = 0; r < rows; r++) {
        double d = v.at(r);
        if (d < min) min = d;
        if (d > max) max = d;
        mean += d;
      }
      mean /= rows;
      for (int r = 0; r < rows; r++) {
        double d = v.at(r);
        sigma += (d - mean) * (d - mean);
      }
      sigma = Math.sqrt(sigma / (rows - 1));

      double epsilon = 1e-9;
      assertEquals(max, v.max(), epsilon);
      assertEquals(min, v.min(), epsilon);
      assertEquals(mean, v.mean(), epsilon);
      assertEquals(sigma, v.sigma(), epsilon);
    } finally {
      if (frame != null) frame.delete();
    }
  }