A computer implemented method, apparatus and computer usable program product for mapping a position of a physical point on a digital model. Sensor data for the physical point is received from a sensor unit and a position of the physical point is correlated to the digital model. An alignment probability for the correlated position is calculated and the calculated value is then compared to a stored threshold value. If the alignment probability for the correlated position does exceed a predetermined threshold probability, an aligned position is formed. An aligned position of the physical point is stored relative to the digital model, responsive to a store map location command.