Currently, there are many computer sites that make maps accessible to users all over the world. The main reasons for their increasing expansion are:
• Reduction of cost (distribution of color graphics such as maps by computer sites costs far less than printing and distributing maps on paper)
• Reduction of transmission time (maps that are put on computer networks can be transmitted over a short period of time (not exceeding a few seconds) to users anywhere in the world)
• Enhancing abilities (it makes interaction between GIS and users possible, so that full conversational conditions are achieved.)
• Extensive use (Computer map provides users with a wide range of applications for maps)
• GIS (Cartographic Information System provides basic information and topological structure of various data in the GIS “Geographic Information System”).