Visualizing Data

  1. Any reason this can't be tacked onto the end of the previous page? This page is very short, and it would be helpful to have the actual coordinates on the same page. --MF
  2. GH Feedback: I'm not sure what the case is, or what the students are being directed to do. What are examples of hypotheses they might have? What is the situation?

Let's go to Snap and visualize the data.

    XML file should be moved to /prog/3-lists directory. --MF
  1. Use the gps-digital-forensics starter project to get started. You'll see that the stage has a nice grid for a background image, and the sprite has a circle costume to stamp coordinates with.
  2. Now get the GPS coordinates into a Snap list. You'll need separate numbers for each longitude and latitude, so each element of your main list of data should be a list with two entries (one for each coordinate).
  3. There is an example script in the starter project that draws a dot at 50, 50. Use your list of data to draw each coordinate on the screen.

Talk with Your PartnerNow that you've visualized the data, discuss with your peers:

  1. Do you have any hypotheses for the case?
  2. How could you test them?