Princípios gerais de cartografia

Resumo

The author first devotes some attention to the definition of Cartography and discusses its objectives as well as the paths it must follow to achieve them. After considering various definitions of Cartography, the author does not attempt to decide among them, but suggests as a working definition it is well to include within the scope of Cartography all field work which

leads to map-making.

            He then shows that the composition of a map always starts from previous work, and a map is in fact a problem resolved by successive approximations.

            He examines field operations as they are carried out in Brazil: he considers various elements about the use of photogrametry and is of the opinion that the trimmetrogon should be used in regions where there is no cartography or where it very poor. He gives a general outline of the method to be followed.

Then he examines those methods which have greatest precision and shows how protogrametry obtains thousands of maps in less time than other methods, and furthermore economizes very considerably on the amount of field work necessary. Next he discusses the diverse field and office operations for the production of maps, and finally examines the processes used in design and the methods of reproduction.

At the end he discusses very briefly the most commonly used projections for topographic

maps.