When declaring a ngModel to a radio group it appears to override the default radio button selection assigned by [checked]="true"
<!--Radio buttons for units-->
<ion-list-header style="color: white">
Units
</ion-list-header>
<ion-list radio-group [(ngModel)]="units">
<ion-item>
<ion-label>Metric</ion-label>
<ion-radio [checked]="true" value= "metric"></ion-radio>
</ion-item>
<ion-item>
<ion-label>Imperial</ion-label>
<ion-radio value="imperial"></ion-radio>
</ion-item>
</ion-list>
Therefore there is no checked button by default when the button group is in view.
I have tried placing the ngModel within the radio button tag, the ion-item tag, both methods throw an exception:
Uncaught Error: Uncaught (in promise): Error: No value accessor for form control with unspecified name attribute _throwError@http://localhost:8100/build/vendor.js:27548:20
Any inout appreciated.