Custom Maps
Maps can be used to meet a wide variety of needs. With so many possibilities available, creating, requesting, or purchasing a map can sometimes become a challenging task. This article presents practical recommendations for those…
Technical notes
Google Earth and Geographic Information
Knowledge of the world gained a new dimension with the release of Google Earth and related mapping applications. In addition to providing satellite imagery of the Earth’s surface, these platforms incorporated extensive geographic databases that…
Using Attribute Queries
Attribute queries are one of the most commonly used techniques in map generation. They allow users to filter records using a variety of operators and select only the features that should be displayed on the…
Maps on the Internet
For Geographic Information System (GIS) professionals, the most obvious approach to publishing maps on the Internet is often to make geographic layers available through a map server. These systems, commonly referred to as Web GIS…
The importance of colors in maps
The production of high-quality maps depends largely on the colors used to represent geographic features such as areas (polygons), lines, and points. There are no inherently “good” or “bad” colors; rather, the effectiveness of a…
Organizing DBF Files
The creation of maps using GIS software depends heavily on the proper organization of the associated DBF file. This task can be performed directly within GIS software or with applications such as Microsoft Access, Microsoft…