1. A map generation apparatus comprising: an acquisition unit that acquires information which is a target of an analysis process; a classification unit that classifies the acquired information into a plurality of types; a tentative map generation unit that selects the types provided by the classifying one by one as a type in question to generate tentative map information of the information belonging to the type in question, based on (i) the information belonging to the type in question and (ii) representative information that represents at least one type other than the type in question; and a map generation unit that generates a map image based on the tentative map information generated for the respective types, wherein the tentative map generation unit selectively uses plural pieces of representative information of a certain number of types as the representative information representing the at least one type other than the type in question so that an angle subtended by (i) a segment connecting representative information of the type in question and each of the certain number of representative information and (ii) a segment connecting the representative information of the type in question and another one of the certain number of representative information is equal to or larger than a predetermined angle.