Raster

Finding/downloading GIS data using Scholars GeoPortal (year specified in title)

Scholars GeoPortal is a geospatial discovery tool that provides access to large scale geospatial datasets that can be used for mapping or analysis. These datasets encompass both vector and raster data on a variety of topics such as land-use, transportation networks, census geography, aerial imagery, geology, and more. Furthermore, Scholars GeoPortal allows users to customize their data extracts by selecting the appropriate area of interest, temporal extent, file format, and coordinate system for their work.

Finding/downloading GIS data using Scholars GeoPortal (selecting by year)

Scholars GeoPortal is a geospatial discovery tool that provides access to large scale geospatial datasets that can be used for mapping or analysis. These datasets encompass both vector and raster data on a variety of topics such as land-use, transportation networks, census geography, aerial imagery, geology, and more. Furthermore, Scholars GeoPortal allows users to customize their data extracts by selecting the appropriate area of interest, temporal extent, file format, and coordinate system for their work.

Working with digital elevation models in ArcGIS

DEMs stored as point shapefiles

  1. Add your DEM point dataset to your map document. Open up the Layer Properties window and click on the Source tab. You should see the line “Coordinates have Z values: Yes” in the Data Source section of the window. This indicates that elevation or height values are included in the spatial reference information for each entity in the dataset.
    Click OK or Cancel to return to the map document.