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?

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?