You can display waveforms of vector or integer signals in analog form instead of the default numeric form. Please follow the steps below for diplaying signals in analog form.
Right click the name of the signal in the waveform.
Select Properties in the context menu.
Switch to the Display tab in the signal properties window.
Select Analog shape, increase height for more comfortable viewing and click Apply.
If the analog waveform shows very little change or is cut from the bottom or top, consider changing values in the from and to fields. If the analog waveform looks strange (chopped, mirrored, etc.), try to switch back to the General tab and change notation.