At least one non-transitory computer-readable storage medium encoded with instructions that, when executed on at least one processor in a locate receiver having a housing, an RF antenna for receiving a magnetic field and outputting an output signal, a processing circuit, for receiving the output signal from the RF antenna and determining a magnetic field strength of the magnetic field, a display device coupled to the housing, at least one memory;
- and at least one processor, coupled to the processing circuit, the display device and the at least one memory, causes the at least one processor to perform a method comprising:
- displaying on the display device a digital image that is generated based on first digital image data that comprises facilities map data and is selected by the at least one processor;
- and
- comparing a location at which an indication of detection of the absence of a facility was generated to a location of a facility line as indicated by the first digital image data and generating an alert based on the comparison.