:fix metode WMA

Author: naagaraa

index.php

@@ -26,3 +26,142 @@
  * THE SOFTWARE.
  *
  */
+
+include "vendor/autoload.php";
+
+$data = [
+    [
+        "bulan" => "januari",
+        "tahun" => 2018,
+        "penjualan" => 89,
+    ],
+    [
+        "bulan" => "februari",
+        "tahun" => 2018,
+        "penjualan" => 95,
+    ],
+    [
+        "bulan" => "maret",
+        "tahun" => 2018,
+        "penjualan" => 85,
+    ],
+    [
+        "bulan" => "april",
+        "tahun" => 2018,
+        "penjualan" => 75,
+    ],
+    [
+        "bulan" => "mei",
+        "tahun" => 2018,
+        "penjualan" => 86,
+    ],
+    [
+        "bulan" => "juni",
+        "tahun" => 2018,
+        "penjualan" => 100,
+    ],
+    [
+        "bulan" => "juli",
+        "tahun" => 2018,
+        "penjualan" => 120,
+    ],
+    [
+        "bulan" => "agustus",
+        "tahun" => 2018,
+        "penjualan" => 95,
+    ],
+    [
+        "bulan" => "september",
+        "tahun" => 2018,
+        "penjualan" => 80,
+    ],
+    [
+        "bulan" => "oktober",
+        "tahun" => 2018,
+        "penjualan" => 92,
+    ],
+    [
+        "bulan" => "november",
+        "tahun" => 2018,
+        "penjualan" => 92,
+    ],
+    [
+        "bulan" => "desember",
+        "tahun" => 2018,
+        "penjualan" => 88,
+    ],
+    [
+        "bulan" => "januari",
+        "tahun" => 2018,
+        "penjualan" => 90,
+    ],
+    [
+        "bulan" => "februari",
+        "tahun" => 2018,
+        "penjualan" => 95,
+    ],
+    [
+        "bulan" => "maret",
+        "tahun" => 2018,
+        "penjualan" => 100,
+    ],
+    [
+        "bulan" => "april",
+        "tahun" => 2018,
+        "penjualan" => 102,
+    ],
+    [
+        "bulan" => "mei",
+        "tahun" => 2018,
+        "penjualan" => 100,
+    ],
+    [
+        "bulan" => "juni",
+        "tahun" => 2018,
+        "penjualan" => 104,
+    ],
+];
+
+use Nagara\Src\Metode\MetodeWMA;
+
+// initialize metode
+$metode = new MetodeWMA;
+$pergerakan = 3;
+
+$metode->proses($data, "penjualan", $pergerakan);
+
+$normalisasi = $metode->getNormalisasi();
+$prediksi = $metode->getResult();
+$sum = $metode->getSum();
+
+// dd($sum);
+
+?>
+
+<h3>Example metode WMA Hasil Dalam Bentuk Table</h3>
+<p>dengan pergerakan = <?=$pergerakan?></p>
+<table border="1">
+  <tr>
+    <th>No<th>
+    <th>normalisasi</th>
+    <th>sum</th>
+    <th>prediksi</th>
+  </tr>
+  <?php $no = 1?>
+  <?php foreach ($normalisasi as $key => $value): ?>
+  <tr>
+    <td><?=$no++?><td>
+    <td><?=$normalisasi[$key]?></td>
+    <?php if (!isset($sum[$key])): ?>
+        <td> - </td>
+	    <?php else: ?>
+        <td><?=$sum[$key]?></td>
+    <?php endif;?>
+    <?php if (!isset($prediksi[$key])): ?>
+        <td> - </td>
+	    <?php else: ?>
+        <td><?=$prediksi[$key]?></td>
+    <?php endif;?>
+  </tr>
+  <?php endforeach;?>
+</table>

src/metode/weight-moving-average/MetodeWMA.php

@@ -115,27 +115,25 @@ public function proses($data = [], $field = "", $pergerakan = 6)
         // menghitung berdasarkan pergerakan
         $pergerakan_w = $pergerakan;
 
-        // $slicedata = array_slice(self::$normalisasi_data,0, $pergerakan);
-        // $peramalan = array_sum($slicedata) / count($slicedata);
-
         $peramalan = [];
         // step 0
         $slicedata;
         foreach (self::$normalisasi_data as $iteration => $value) {
             $slicedata[$iteration] = array_slice(self::$normalisasi_data, $iteration, $pergerakan_w);
-            // array_push($container_1, $slicedata);
-            // $hasil = array_sum($slicedata) / count($slicedata);
-            // $peramalan[$pergerakan++] = $hasil;
         }
 
-        // dump($slicedata);
         //  step 3 mencari jumlah n pergerakan
         $hasil = 0;
         for ($i = 1; $i <= $pergerakan_w; $i++) {
             $hasil += $i;
         }
-        // echo "pergerakan n";
-        // dump($hasil);
+
+        // step 3.1 kalikan data dengan bobot
+        foreach ($slicedata as $key => $value) {
+            foreach ($value as $index => $nilai) {
+                $slicedata[$key][$index] = ($nilai * ($index + 1));
+            }
+        }
 
         // step 4 dapat jumlah bagian atas / sum
         foreach ($slicedata as $index => $value) {
@@ -146,7 +144,7 @@ public function proses($data = [], $field = "", $pergerakan = 6)
         $sum = [];
         $pergerakan_s = $pergerakan;
         foreach ($slicedata as $key => $value) {
-            $sum[$pergerakan_s++] = "{$value}/{$hasil}";
+            $sum[$pergerakan_s++] = "($value/$hasil)";
         }
         self::$hasil_sum = $sum;