130 A web-based data extraction tool for the USA We have developed a web application that allows people to sample a variety of predefined spatial data sets at points specified by the user. Data are available for the 48 contiguous states and for Alaska. The application uses PHP Mapscript, PostGIS, and GDAL, among other tools. FOSS4G2006 - Free And Open Source Software for Geoinformatics Session 14 Development Chris Garrard chrisg@gis.usu.edu Christopher M. McGinty R. Douglas Ramsey Chris Garrard chrisg@gis.usu.edu <MaKaC.conference.ContributionType object at 0xb492f02c>