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Resources for GIS and Spatial Analysis

Resources for GIS and Spatial Analysis. Mike Goodchild. Outline. Data sources Software sources. Geolibraries. One-stop shops National Geospatial Data Clearinghouse http://nsdi.usgs.gov/ Geospatial One-Stop http://www.geodata.gov/ Integration with GIS OGC web server specifications

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Resources for GIS and Spatial Analysis

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  1. Resources for GIS and Spatial Analysis Mike Goodchild

  2. Outline • Data sources • Software sources

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

  4. Implications for finding data • Heuristics for the SAP • 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

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

  6. CLM of the Alexandria Digital Library

  7. Knowing where to look • 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

  8. Finding software tools • GIS core functions • ESRI ArcGIS • MapInfo • Idrisi • GRASS • Manifold

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

  10. 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.

  11. 1 target zone 4 source zones 15% of B B A C 10% of A D 5% of C 50% of D PopTARGET = 0.10 PopA + 0.15 PopB + 0.05 PopC + 0.50 PopD

  12. CSISS tool search • http://www.csiss.org • General Google search

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