title: Hiding a mat data table column in angular 4
body: <pre><code>&lt;ng-container matColumnDef="jan"&gt;
  
  &lt;mat-header-cell [hidden]="true" *matHeaderCellDef  style="font-size: 65%" class="white-text" fxHide [fxShow.gt-md]="true"&gt;
    Jan
  &lt;/mat-header-cell&gt;
  &lt;mat-cell *matCellDef="let element" style="font-size: 65%"&gt; &lt;span&gt; &lt;/span&gt; &lt;/mat-cell&gt;
  </code></pre>
  
  <p></p>
  
  <p>I am trying to hide a column in angular 4 . I tried to use <code>*ngIf</code> , but it says we are not allowed to use more than one component with <code>*</code> sign. Even <code>[hidden]</code> does not work.</p>