CircuitWarrior , 06-22-2016, 01:06 AM
The ratsnets command (I think this is used in the EAGLE CAD) is done in Altium Designer like following:
Tools -> Polygon Pours -> Repour All (Or the specific Polygon you want to repour)
Or you could double click on the Polygon to be repoured, press OK and press Ok on the followed dialog.