How to pass data to material table data source dynamically

Answer 1

you can use it like this: create a new DataSource based on a copy of the data (for immutability)

this.dataSource = new MatTableDataSource([...<[whatever incoming data]>);

try this (for your case)

this.feedsService.getFeedsByVin(this.vin).subscribe((data) => {
        this.feedsOverviewData = [...data];
      });

(similar setup for ngOnInit)

 ngOnChange() {
    console.log(this.feedsOverviewData);
    this.dataSource = new MatTableDataSource(this.feedsOverviewData);
  }

the subscribe works in its own async process with the data only available there. angular does some things behind the scenes to make this work.