GRS Publications and Sample Data

	Formats	Document Citation
	(629kb)Adobe pdf file	Koltun, J. ''Geographic Information Systems: an Introduction.'' A slide presentation that introduces the concept of Geographic Information Systems and how they work. Examples like modeling, buffering, and overlay analysis show why GIS is useful to managers everywhere.
	(561kb)Adobe pdf file	Stumpf, K.A and Koltun, J. 1995. ''GIS Data Verification.'' A slide seminar presented at the 1995 IGUG conference in San Jose, CA that outlines strategies for dealing with problems and solutions in GIS data. Topics include graphical problems such as overshoots, database problems such as duplicate IDs, and solutions such as line cleaning and customized SQL statements.
	(845kb)Adobe pdf file	Stumpf, K.A. 1993. ''The Estimation of Forest Vegetation Cover Descriptions Using a Vertical Densitometer.'' Presented at the Joint Inventory and Biometrics Working Groups session at the SAF National Convention, Indianapolis, IN.
	(3,230kb)Adobe pdf file	Stumpf, K.A. ''Image Processing Methodology.'' A slide presentation detailing the work involved in an image processing project from data aquisition to image classification to accuracy assessment.
	(1,318kb)Adobe pdf file	Stumpf, K.A. ''An Image Classification Sampling Methodology based on the Integration of IP/GIS Capabilities.'' A slide presentation that demonstrates GRS's approach to developing image classification training site locations. Presented at the 2004 ASPRS Conference, Denver, CO
	(675kb)Adobe pdf file	Stumpf, K.A. ''The Development of Fire Fuel Data Using Satellite Image Classification/Land Cover Mapping Techniques.'' A slide presentation that demonstrates GRS's approach to developing fire fuel class map data using classification techniques and database analysis
	(934kb)Adobe pdf file	Stumpf, K.A. ''The Aggregation of Pixel Data into Mapped Area Features.'' A slide presentation that contrasts inappropriate approaches of pixel aggregation, such as filtering and smoothing with more accurate and effective techniques like ecological rule-based pixel aggregation.
	(522kb)Adobe pdf file	Stumpf, K.A. 1993. ''From Pixels to Polygons: the Rule-based Aggregation of Satellite Image Classification Data Using Ecological Principles'' Presented at the GIS'93 Conference, Vancouver, BC
	(953kb)Adobe pdf file	Hill, T. 1993. ''Taking the " " Out of "Ground Truth": Objective Accuracy Assessment'' Presented at the 12th Pecora Conference, Sioux Falls, SD
	(953kb)Adobe pdf file	Hill, T. 1996. ''Forest Biometrics from Space'' This paper decribes the Applegate Watershed Mapping Project, including the accuracy assessment that was performed.
	Land Cover Mapping Sample Data Sets Augustine Island Applegate Watershed Girdwood Watershed Contact GRS	GRS has developed several sample data sets. These data sets represent accurate and detailed Land Cover Mapping efforts performed by GRS. Data are available in both pixel and polygon formats at different minimum mapping area limits. Sample areas include Augustine Island, the Girdwood Watershed, and the Applegate Watershed. Applications depict the use of land cover data to develop detailed, quantitative, and comprehensive vegetation maps, as well as fire fuel maps and hazard ratings.