Midterm Review

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GEO 109: Digital Mapping

First half of course we've focused on making new data.

By creating a text file (CSV)

traveling a path (GPS)

manipulating data (GIS)

This takes a lot of precise knowledge

E.g., you have a GeoJSON, what does it store?

If you can create new data

you can create a map that has never been seen.

🚀

We'll be map makers for remainder of course.

Maybe you'll make a map as a gift to someone.

Questions like the following will be on the midterm...

Q1

  • Why could a map could be wrong to someone?
  • Visit our first lab and task.

Q2

  • Data are observations that are encoded in a ___________.
  • We encode data in many different ways. Why do we do this?

Q3 & Q4

  • What does latitude and longitude measure?

Q5

  • What units are latitude and longitude measured in?

Q6

  • What could be Lexington, Kentucky's latitude and longitude?

Q7

  • What does the vector data model store?

Q8

  • What does the raster data model store?

Q9

  • What does a GeoJSON file store?

Q10

  • What does a GeoTIFF file store?

Q11

  • What do we use a scale bar on a map?

Q12

  • What does a GPS require?

Q13

  • What is the primary purpose of a map projection?

Q14–Q15

  • Review the EPSG codes for projections we have used in class.
  • If you saw a world map of countries and lines of latitude and longitude, could you identify its projection and EPSG code?

Q16

  • What EPSG code does GPS data use?

Q17

  • What have we used GIS for in this class?
  • Recall our goal in the third lab?

Q18

  • What tool would you use to remove overlapping features in a vector dataset?

Q19

  • What tool would you use to create a polygon that is a fixed distance from a point?

Q20

  • What tool would you use make a shaded relief from a Digital Elevation Model (DEM)?