Modeling and Representing the Multiple Compound Population Pyramid for the Population of Salah al - Din Governorate, 2016 .
-The map is an effective tool for expression, understanding and transmission of information. It is a means of communication between the sender and the receiver. It is one of the main tools that used by the spatial studies, because of the great role which it plays as a means of communication, it allows a quick and comprehensive visual perception of the total data Represented by cartography. Also it is a global way that transcends language barriers by means of symbols which designed by using the elements of visual variables and different signature patterns that have a good visual vision .
There is no doubt that the map is the geographical address in his research when he is studying the place , and since this tool is a visual means of communication to display and broadcast the real world to the others, it must be effective and aware of the performance, this study came to show common cartographic modeling and errors resulting from it address. These errors using a new approach and tool called the graphical processing under the title (Modeling the maps of the population pyramid effective compound of the population of Salah al-Din and its problems) taking the data which available from the ministries of the State and the relevant institutions in the province of Salah al-Din mainly. In this study a modern computer software was using in the process