Geospatial concepts 02 - coordinate systems

Which of the following is true of the UTM coordinate system?

• Units are meters

• Projection is transverse mercator

• All coordinates are positive numbers

• Zones are aligned along lines of contact and run east-west

• They are all true

Which of the following is an example of non-lossy compression approach to files?

• TIFF

• JPEG

• GIF

• Mr.Sid

• All are lossy

What component of the coordinate system definition tells us which ellipsoid is used?

The model of Earth is, strictly speaking, the same as the projection

• true
• false

What is the resolution of this raster grid?

Which of the following snippets of code will project myfeature to crs 4326?

• st_crs(myfeature) <- 4326

• myfeature <- st_crs(4326)

• myfeature <-st_project(myfeature, 4326)

• myfeature <-st_transform(myfeature, 4326)

Under what condition can you project myfeature to EPSG 4326? (More answers are possible)

• myfeature crs is defined as different than 4326

• myfeature crs is not defined

• myfeature crs is defined as "NA"

• myfeature coordinate system is defined with a valid EPSG

In an ordered pair of angular coordinates, what should the first number represent?

• The latitude

• The vertical distance from the origin.

• The longitude

• The origin.