homework 4

lab/lab1/part1.js

@@ -66,16 +66,15 @@ Is printMenu a function? Answer this question with underscore. Should evaluate
 to true.
 ===================== */
 
-var query1;
-
+var query1 = _.isFunction(printMenu);
 console.log('printMenu is a function:', query1);
 
 /* =====================
 Is bakedGoods an array? Answer this question with underscore. Should evaluate
 to true.
 ===================== */
 
-var query2;
+var query2 = _.isArray(bakedGoods);
 
 console.log('bakedGoods is an array:', query2);
 
@@ -84,39 +83,38 @@ Is the first element in bakedGoods an object? Answer this question with
 underscore. Should evaluate to true.
 ===================== */
 
-var query3;
+var query3 = _.isObject(bakedGoods[0]);
 
 console.log('The first element in bakedGoods is an object:', query3);
 
 /* =====================
 Use _.where to return all cakes. Or bread. Whichever is your favorite.
 ===================== */
 
-var query4;
-
+var query4 = _.where(bakedGoods, {type: "Cake"});
 console.log('All bread. Or cakes:', query4);
 
 /* =====================
 Use _.filter to return all baked goods that cost more than $4.
 ===================== */
 
-var query5;
+var query5 = _.filter(bakedGoods, function(g){return g.price > 4.0;});
 
 console.log('More than $4:', query5);
 
 /* =====================
 Use _.sortBy to order the list by inventory (from lowest to highest).
 ===================== */
 
-var query6;
+var query6 = _.sortBy(bakedGoods, 'inventory');
 
 console.log('Sorted by inventory (lowest to highest):', query6);
 
 /* =====================
 Use _.groupBy to organize the baked goods by type.
 ===================== */
 
-var query7;
+var query7 = _.groupBy(bakedGoods, 'type');
 
 console.log('Grouped by type:', query7);
 

lab/lab2/js/part1-ajax-calls.js

@@ -9,3 +9,13 @@ var Stamen_TonerLite = L.tileLayer('http://stamen-tiles-{s}.a.ssl.fastly.net/ton
   maxZoom: 20,
   ext: 'png'
 }).addTo(map);
+
+var promise = $.ajax('https://raw.githubusercontent.com/MUSA611-CPLN692-spring2020/datasets/master/json/philadelphia-bike-crashes-snippet.json');
+promise.done(console.log); // this prints it in json form
+
+var unparsed; // converting to csv
+promise.done(x=> unparsed = x); // saving the json as a new variable 'unparsed'
+parsed = JSON.parse(unparsed); // parsing 'unparsed'
+console.log(parsed);
+
+// $ means jquery

lab/lab2/js/part2-app-state.js

@@ -33,19 +33,31 @@
 ===================== */
 
 // Use the data source URL from lab 1 in this 'ajax' function:
-var downloadData = $.ajax("http://");
+var downloadData = $.ajax("https://raw.githubusercontent.com/MUSA611-CPLN692-spring2020/datasets/master/json/philadelphia-bike-crashes-snippet.json");
 
 // Write a function to prepare your data (clean it up, organize it
 // as you like, create fields, etc)
-var parseData = function() {};
+var parseData = function(data){return parsed=JSON.parse(data)};
 
 // Write a function to use your parsed data to create a bunch of
 // marker objects (don't plot them!)
-var makeMarkers = function() {};
+var createMarkers = function(crash){
+  var lat = crash.lat_final;
+  var long = crash.long_final;
+  var marker = L.marker([lat,long]);
+  return marker;
+};
+
+var makeMarkers = function(parsedData) {
+  markers = _.map(parsedData, createMarkers);
+  return markers;
+};
 
 // Now we need a function that takes this collection of markers
 // and puts them on the map
-var plotMarkers = function() {};
+var plotMarkers = function(markers) {
+  _.map(markers, function(m){m.addTo(map)});
+};
 
 // At this point you should see a bunch of markers on your map if
 // things went well.
@@ -66,9 +78,11 @@ var plotMarkers = function() {};
 
 // Look to the bottom of this file and try to reason about what this
 // function should look like
-var removeMarkers = function() {};
+var removeMarkers = function(markers) {
+  _.map(markers, function(x){map.removeLayer(x)});
+};
 
-/* =====================
+/* ==============2wsx=======
   Optional, stretch goal
   Write the necessary code (however you can) to plot a filtered down version of
   the downloaded and parsed data.