I have a filter drop down in table1 which is present via table2 entries. In table2 if i have "Car" 2 times, den in filter dropdown also its showing 2 times Car, Car. How do i make it to come only once. Please help

HTML Code:

```
<div class="queryBox col-lg-2 col-md-2 col-sm-2 col-xs-3 taskDiv">
                <label>Vehice</label>
                <ng-select [options]="Vehice" [(ngModel)]="filter.vehice" class='filterDropDown' placeholder="All" [allowClear]="true">
                </ng-select>
            </div> 

```

Ts Code:

```
this.ApiService
                .getVehice  ()
                .subscribe(
                  vehicle  => {
                    this.Vehice = vehice.map(function(item) {
                      if(item.vehicle ) {
                        return {"value":item.vehice,"label":item.vehice};
                      }
                    })

```