10 – History of GIS

Points to keep in mind GIS is NOT an umbrella for other geospatial fields Many people express GIS as an umbrella of which their spatial fields such as remote sensing, surface draping rendering (flight simulators) or cartography fall under. These areas are better expressed as separate complimentary entities that exist Read more…

09 – Data Quality

Beyond Accuracy and Precision We discussed the issues of accuracy and precision in last lecture, but we should also look a bit deeper at error and other related issues defining data quality. We are now well versed on how important “clean” spatial data is for mapping and analysis, but we Read more…