Geopsy: Subtract Value

Substract Value, reached from the Waveform menu, removes an offset value for the signals in the active signal viewer. By clicking on Substract Value, a pop-up window appears with the following option:

• "Mean Value" removes the mean of the signal.
• "Value" allows to specify the value to be removed.

Warning: the offset may be hidden by the offset correction in the Properties of the Graphic viewer (tab "Layers", box Values). On the contrary to this appearance option , "Substract value" modifies the temporary signal.