title: Angular4 with Angular Google Maps (AGM) - display markers with loop *ngFor
body: <p>Please it's been 2 weeks that I block on my code.</p>
  
  <p>I use Angular4 with Firebase and Angular Google Maps (AGM)
  <a href="https://angular-maps.com/guides/getting-started/" rel="nofollow noreferrer">https://angular-maps.com/guides/getting-started/</a></p>
  
  <p>I'm trying to display markers with loop *ngFor but I can not do it</p>
  
  <p>result with angular4 + firebase</p>
  
  <p><a href="https://i.stack.imgur.com/OFYok.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OFYok.png" alt="enter image description here"></a></p>
  
  <pre><code>&lt;agm-map [latitude]="lat" [longitude]="lng" [zoom]="1"&gt;
  
    &lt;agm-marker *ngFor="let cavist of cavists;" [latitude]="cavist.lat" [longitude]="cavist.lng"&gt;
            &lt;agm-info-window&gt;
              &lt;strong&gt;{{cavist.title}}&lt;/strong&gt;
              &lt;br&gt;
              &lt;br&gt;&lt;img src="{{cavist.imageUrl}}" alt="{{cavist.title}}"&gt;
              &lt;br&gt;
              &lt;br&gt;&lt;strong&gt;adresse&lt;/strong&gt;
              &lt;br&gt;&lt;span&gt;{{cavist.adress}}&lt;/span&gt;
              &lt;br&gt;&lt;span&gt;{{cavist.zipcode}} - {{cavist.city}}&lt;/span&gt;
              &lt;br&gt;
              &lt;br&gt;&lt;strong&gt;description&lt;/strong&gt;
              &lt;br&gt;&lt;span&gt;{{cavist.description}}&lt;/span&gt;
              &lt;br&gt;
              &lt;br&gt;&lt;strong&gt;coordonnees gps&lt;/strong&gt;
              &lt;br&gt;&lt;span&gt;latitude: {{cavist.lat}}&lt;/span&gt;
              &lt;br&gt;&lt;span&gt;longitude: {{cavist.lng}}&lt;/span&gt;
              &lt;br&gt;
            &lt;/agm-info-window&gt;    
          &lt;/agm-marker&gt;
  &lt;/agm-map&gt;
  </code></pre>
  
  <p>However, I managed without difficulty with Angular 4 but without firebase.</p>
  
  <p>result with angular4</p>
  
  <p><a href="https://i.stack.imgur.com/dNadP.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dNadP.jpg" alt="enter image description here"></a></p>
  
  <p>Please can you help me?</p>