Abstract: A computer-implemented method of mapping. The method includes analyzing images of faces in a plurality of pictures to generate content vectors, obtaining information regarding one or more vector dimensions of interest, at least some of the one or more dimensions of interest corresponding to facial expressions of emotion, and generating a representation of the location. Appearance of regions in the map varies in accordance with values of the content vectors for the one or more vector dimensions of interest. The method also includes using the representation, the step of using comprising at least one of storing, transmitting, and displaying.