Intro to GIS data quiz

Types of Spatial Data include

• Vector

• Raster

• Netcdf

• Velociraptor

• Directions from a local on how to get back to the highway

Vector data geometries include:

• Points

• Lines

• Polygons

• Polyglots

• Squigles drawn by a niece of a nephew

Raster data files include:

• a spatial grid with values for every cell in the grid

• a bottom corner coordinate, cell size, and Coordinate reference system

• Multiple bands for Red Blue and Green if imagery

• Directions back to the highway

A geographic Coordinate System uses what two coordinates to place your data on the map?

• Latitude

• Longitude

• US Survey feet (not international feet) to the left of that tree in the back of your school yard growing up

• metres Easting

What are some differences between a Geographic Coordinate System (GCS) and a Projected Coordinate system (PCS)

• A PCS projects the location onto a flat plane

• A PCS projects the location onto a 3D Geoid

• A GCS uses latitude and longitude, while a PCS will use a distance unit like metres

• A GCS projects the location onto a 3D Geoid

• A PCS uses latitude and longitude, while a GCS will use a distance unit like metres

What are the features that can be Preserved by a Projected Coordinate System?

• Cardinal directions between two places

• Distances between two places

• Areas of polygons on the map

• Keeping the shapes on the map correct accurate

• The absolute true answer of the fastest way from your uncle's house to the shops

Where is your data located?

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What kind of data would you like to work with in a GIS?

• Points

• Lines

• Polygons

• Rasters

• NetCDF's

Which tool would you most want to see a demonstration of today (Note we can do both!)

• QGIS

• Python ( little bit of R)

Is there anything you would like to see me try with a GIS?

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