auto

assign4/README.md

 # Assignment 4: Documents and a SwiftUI Map
-
+v1.1
 
 ## Goals
 Learn to use:
@@ -18,19 +18,13 @@ all this and just emulate the demo video. Doing that gets you
 full points. However, the following set of steps is a good approach to
 building this app methodically.
 
-## Step 1: Showing a Map (25 pts)
+## Step 1: Showing a Map and Tracking the Rider (25 pts)
 
 Go through the video on 10/26 for Core Location and using the SwiftUI Map object.
 Display the static location of the user on a map. Core data was
-discussed 10/14 and 10/19
-
-## Step 2: Tracking the Rider (25 pts)
-
-- Set up location updating to get location updates.
-- Keep the user centered in the middle of the screen in a region with
-  an appropriate zoom level. Do this by using the appropriate
-  `userTrackingMode` in your `Map()` view initialization. This will
-  make the  tracking smooth, not jerky.   
+discussed 10/14 and 10/19. Note that **you must display your map with `Map()`**,
+not `MKMapView()`.  Use the appropriate user tracking parameter with your map
+initialization to track the rider smoothly.
 
 ## Step 3: Drawing the Path Trajectory (25 pts)
 
@@ -42,13 +36,27 @@ you deem appropriate. You will receive most of the credit as long as the view
 indicates the taken path and looks decent. You will get more points if
 you are able to use a `polyline` overlay over the `Map` object.
 
-## Step 4: Saving and Viewing Tracks (25 pts)
+## Step 4: Saving Tracks (25 pts)
+You should have at least two
+tabs in your app, one for the recording map and one for displaying the set of
+saved tracks from CoreData.
 
+When the user stop recording and/or "saves", you must save the track to
+`CoreData`, programmatically moving to the saved tracks tab. 
 Define a core data `Track` entity that contains, at a minimum, a name,
 a timestamp, and a sequence of coordinates.
 
-You will need to have routines to serialize to and from JSON, which is
-cast as a `Data`, which is then written/read to/from the database.
+You could create multiple entity types, such as a *Track* and a *Point*, and
+then establish relationships between them. It is also acceptable 
+to serialize the set of points as a JSON, and represent that in the Track as
+"binary data".
+
+## Step 5: Track Tab (25 pts)
+This tab should show all saved tracks, allow deleting of individual tracks
+with swipe left, and use navigation links to display individual tracks when
+selected. See the video.
+
+
 
 ## Hints:
 
@@ -84,7 +92,7 @@ that exports location info through bound variables.
 
 ## Notes:
 
-**Important**: Please avoid the usage of UIKit or any wrappers for UIKit views such as UIViewRepresentable. 
+**Important**: Please avoid the usage of UIKit, MKMapView or any UIKit views such as UIViewRepresentable. 
 Using such packages would result in an automatic 0 in the respective
 task. You should *not* use **MKMapView()**. Instead, use **Map()**.
 - Might look [here]() for polygons. I have *not* verified this, might cause your laptop to go up in a puff of smoke, work great, or fail to compile.