How Does GIS Works
CREATING GIS
- Essentially, geographic information states what is where.
- So to create geographic information, we have to record these two elements somehow.
- They can be captured through many different types of observations, measurements and surveys.
- Data can be sourced from aerial photography, satellite images, field samples, land surveying, population censuses, global positioning systems (GPS) and government administrative records among others.
How To Combine Geographic Information..?
- If we are combining a number of different geographic information themes together, they may be from different sources, in different formats and covering different study areas.Therefore, we need to use a system to deal with the disparate sources and organize them so that they can be combined.
- A Geographic Information System does just that It is a tool for the input of different geographical information themes so that they can be stored, organized, displayed and analyzed.
- It uses geography as the common denominator between separate themes so that they can be combined.
- Its purpose is to provide answers to questions based on geographical data.
Click the following link to avail PDF file creating GIS
