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GIS Data Resources. Ruppert Grauberger Chief, Mapping & Photogrammetry Division of Engineering. GIS data. GIS data come in various formats, such as “shapefiles”, geodatabases (feature class), coverages, raster files
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GIS Data Resources Ruppert Grauberger Chief, Mapping & Photogrammetry Division of Engineering
GIS data • GIS data come in various formats, such as “shapefiles”, geodatabases (feature class), coverages, raster files • GIS vector files consist of the spatial entities (e.g., points, lines, polygons) AND the attributes of that entity (tabular) • Raster files are arrays of “pixels” that contain discrete values • GIS data files are not simple files, and a special data management module is used to copy/move/paste files
Sources of GIS data • On-line • Cal-Atlas Geospatial Clearinghouse • http://www.atlas.ca.gov • not extensive • ArcGIS Online • ESRI and government agency services • directly import into ArcMap • http://www.arcgisonline.com • Geospatial One Stop • federal government clearinghouse • links and searches • http://www.geodata.gov • Division or Section data library • shared drives • i.e. DFM: \\gis1\data • Colleagues • DWR_GIS email list • (to subscribe, go to http://listhost2.water.ca.gov/mailman/listinfo/dwr_gis_workgroup) • DWR Enterprise Geospatial Data Library (coming soon ...) • Image Server “beta version” is currently up and running
DWR Enterprise Image Server Particulars for connecting are: • 1. Start in ArcCatalog. • 2. Expand GIS Servers in the TOC. • 3. Double click Add ArcGIS Server. • 4. Select Use GIS Server • 5. Select Internet, enter http://parcgis1/arcgis/services , and login in with your DWR username and password. • 6. The are currently 8 services that should show up in the TOC under "arcgis on parcgis1 > Image Services" and can be added to an MXD.
Image Server Template MXD Used as a beginning point for most of our GIS mapping projects
Image Server Template MXD Scale dependent California Map
Image Server Template MXD Scale dependent 100K USGS topo map
Image Server Template MXD Scale dependent 24K USGS topo map
Image Server Template MXD NAIP 2005 1-meter aerial is default background behind 24K topo map
Image Server Template MXD NAIP 2005 Infrared is also available
Image Server Template MXD Extent of Aerial Express 2006 2-foot imagery with DRMS LiDAR Index
GIS Data Resources Questions ?