Karteikarten
Ohne Titel
Karten in diesem Stapel (13)
- 1What is spatial analysis?Includes all the transformations, manipulations, and methods that can be applied to geographic data
(Crux of GIS) - 2What does Spatial analysis do?Joins - transfers the attributes from one feature class to another feature class based on their spatial relationship
Tool Examples: Clip
Intersect, Union, Identity, Erase, Append, Split, Buffer - 3GIS Software Customization ?Extends the ability to the user to create their own spatial or aspatial programs/ operations/ extentions…
GIS uses industry standard computer programming languages
-Scripting languages—Python, R - 4Why Code?Allows for batch processing in loops
You have 1,000 files that need the same type of analysis done on them
Retain the methodology so it can be repeated - 5Primary Geog. Data CaptureRaster Data Capture
Most popular form remote sensing
Active and passive sensors
Resolution is the key from a GIS perspective
Spatial
Spectral
Temporal - 6Primary Data CaptureVector Data Capture
Surveying
Ground based surveying using a total station and/or GPS unit and recording points - 7Secondary Data Capture Vector Data CaptureHeads-up Digitizing
Defining point, line, and polygon objects on-screen using point-or stream-digitizing - 8What is Vectorization?Automated process using software algorithms to build simple line strings from the original pixel values
- 9Digitizing Errors Examples:Overshoots
Undershoots
Dangling segments
Sliver Polygons
Tolerance levels can close off polygons
Misalignments - 10Database Management SystemRelation databases
Joining database tables - 11SQL: Standard Query LanguageProgramming language designed to retrieve sets of data from tables
- 12LiDARLight Detection and Ranging
Scanning laser rangefinder
Can be set up for a specific region of the electromagnetic spectrum - 13Secondary Data Capture for rasterScanners
Items that can be scanned Building plans
CAD drawings
Paper maps, ect.
Informationen
- Beschreibung
- Karteikarten am Ohne Titel, erstellt von Rachel Ford am 24/02/2018.
- Erstellt von
- Rachel Ford
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