5.8.2 Field Data Collection . Enumeration area map symbols should follow cartographic standards and should preferably be self-explanatory, not requiring special complex training instructions for the enumerators. In any case, the use of maps should be an essential part of the enumerators' training. 5.8.3 Presentation and analysis of results . Maps can be used to relate statistical data with the corresponding geographic area, facilitate the understanding of statistics and assure a more extended and appropriate use of data.
Maps provide a means by which statistical information can be presented simply and effectively.
Exploration of existing map resources inventory 5.9 One of the first activities in the planning of an agricultural census or survey should be to explore in detail the feasibility of using existing maps. Date of publication or preparation. Date of the basic photography if made from aerial photos. Purpose of the preparation. The map inventory should then be evaluated for census or survey use by cartographers.