Terms & Concepts

Terms & Concepts

• What is GIS?  

• What is Remote Sensing?

• Vector Data

  • • features

    • attributes (attribute table)

    • field

    • class

• Raster Data

  • • spatial resolution

    • temporal resolution

    • radiometric resolution

    • spectral resolution

    • spectral signatures

    • hyperspectral data

    • multispectral data

    • pixels

    • digital numbers

    • composite (by color, cloud free, etc.)

    • MODIS, Landsat, Sentinel

• Basemap

• Electromagnetic Spectrum

• Digital Elevation Model (DEM)

• Indices (NDVI, etc.)

• Zonal Statistics

• "Top of Atmosphere" Reflectance imagery

• Atmospheric Correction

• Surface Reflectance imagery

• Webmap

• passive vs. active sensors

• pushbroom scanner vs whiskbroom scanner

• centroid

• Effective communication via maps, maps can communication emotion

• symbology

• cloud based GIS

• census tract

• layers

• spatial join

• feature class

• geodatabase

• shapefile

• metadata

• LIDAR

• SAR

• atmospheric windows and EMR scattering/absorption by the atmosphere

• False color image (for example - NIR in the "red gun" to see vegetation clearly)

• 8 bit (2^8) = 256 digital number possibilities per pixel (i.e. Landsat 7), 16 bit (2^16) = 65536 digital number possibilities per pixel (i.e. Landsat 8)

• unsupervised classification

• supervised classification

• georeferenced

• geospatial data

• ground truthing

• feature service

• image service 

• tile service

• projections in general - see content

• projection transformation

• projection datum

• Universal Transverse Mercator

• coordinate systems

• EPSG#

• Topology

• Geoprocessing

• Buffers

• Intersection

• Union

• Map vs Layout

• Query

• Attribute Query

• Spatial Query

• Join

• Attribute Join

• Spatial Join

• Vector based geoprocessing operations

• Raster based geoprocessing operations

• Hot spots & clusters

• Aggregation

• Spatial Autocorrelation

• exploratory spatial analysis

• "Summarize Nearby" tool in ArcGIS Online

• filter layer

• "travel area analysis" tool in ArcGIS Online

• "Trace Downstream" tool in ArcGIS Online

• "generate travel areas" tool in ArcGIS Online

• intersect -overlay layers

• union  -overlay layers

• erase -overlay layers

• query

• Major Satellites we have mentioned:  MODIS, Sentinel, Landsat

• Land Cover Classification

• Expressions that have no location component are called attribute expressions 

• Expressions with a location component are called spatial expressions 

• summarize within

• Geospatial Ethics and guiding principles in making ethical decisions in GIS

• Geospatial Research - what is the utility of adding a spatial component?