1. Resources for GIS and Spatial Analysis Mike Goodchild

2. Outline n Data sources n Software sources

3. Geolibraries n One-stop shops –National Geospatial Data Clearinghouse http://nsdi.usgs.gov/ –Geospatial One-Stop http://www.geodata.gov/ n Integration with GIS –OGC web server specifications –Geography Network

10. Implications for finding data n Heuristics for the SAP n Geographic information is most likely to be found on a server located within its footprint –convergence of d and s –but at what level in the hierarchy? jurisdiction that most closely matches the footprint max ||J  F|| / (||J|| ||F||) 1/2

11. Transitioning map libraries n From central services to unique services –from general collections to special collections –from UCSB's Map and Imagery Laboratory to the Alexandria Digital Library n There will always be more than one service –no amazon.com of geographic information www.alexandria.ucsb.edu www.geographynetwork.com www.fgdc.gov n Unique services must declare themselves –through collection-level metadata (CLM) –formalizing and publishing d

13. CLM of the Alexandria Digital Library

14. Knowing where to look n Approaches to CLM –by data type ortho.mit.edu –by area of the globe Arctic Data Directory –the one stop shop www.fgdc.gov –a new generation of search engines identifying footprints

15. Finding software tools n GIS core functions n ESRI ArcGIS n MapInfo n Idrisi n GRASS n Manifold

16. GIS extensions n ESRI scripts –Avenue (ArcView 3.x) –AML (ArcInfo <8) –VBA (ArcInfo 8,9) –Python, JScript (ArcInfo 9) –ArcToolbox, ArcScript n Component-ware –COM-compliant software ArcGIS and Excel ArcGIS and Idrisi

17. Example (areal interpolation) ‘Pass Excel the U column vector (source values) While Not pFeat Is Nothing pRow = Call GetRow(pFeat.Value(0)) ‘GetRow is user-defined function pCol = "A" zValue = pFeat.Value(zValueIndex) Sheets("Sheet2").Select 'Store vector on Sheet 2 in Column A Range(pCol & pRow).Select Selection.R1C1 = zValue Set pFeat = pCursor.NextFeature Wend M.J. Ungerer and M.F. Goodchild (2002) Integrating spatial data analysis and GIS: a new implementation using the Component Object Model (COM). International Journal of Geographical Information Science 16(1): 41–54.

18. 1 target zone 4 source zones A B C D 10% of A 15% of B 5% of C 50% of D Pop TARGET = 0.10 Pop A + 0.15 Pop B + 0.05 Pop C + 0.50 Pop D

19. CSISS tool search n http://www.csiss.org http://www.csiss.org n General Google search