title: Filter out fields from collection document and store it in new collection
body: <p>I have following collection document</p>
  
  <pre><code> {
  
              "Dine" : {
                      "Cuisine" : "North Indian",
                      "Popular Dishes" : "Aaloo Tikki, Pao Bhaji, Bhalla Papdi",
                      "Dine In Available" : "Yes",
                      "Online Booking" : "",
                      "Home Delivery" : "",
                      "Pure Veg" : "Yes",
                      "Restaurant Type" : "",
                      "Air Conditioned" : "",
                      "Outdoor Area" : "",
                      "Pint of Beer" : "",
                      "Bar Available" : "",
                      "Wifi" : "",
                      "Number of Deals" : "",
                      "Happy Hours" : "",
                      "Cost for 2" : "Rs 0-250",
                      "Credit Cards Accepted" : "",
                      "Deal Available" : ""
              },
              "Location Details" : {
  
  
                      "Latitude" : "28.7004740",
                      "Longitude" : "77.1174010",
  
              },
              "MetaData" : {
                      "Meta Description" : "",
                      "Meta Keywords" : ""
              },
              "Operation Hours" : {
                      "Operation Hours" : "11 AM-11 PM"
              },
              "Other Options" : {
                      "Chain Name" : "",
                      "Expiry Date" : "",
                      "As seen in" : "",
                      "Deals Head" : "",
                      "Deals ID" : "",
                      "Events Head" : "",
                      "Events ID" : "",
                      "Show Bookings" : "",
                      "Form Reciever Email" : "",
                      "Powered By" : "",
                      "Show Photos" : ""
              },
              "__v" : 0,
              "_id" : "-bittoo"
      }
  </code></pre>
  
  <p>I want to make a document like:</p>
  
  <pre><code>  {
    "type": "Feature",
    "geometry": {
      "type": "Point",
      "coordinates": [125.6, 10.1]
    }
  }
  </code></pre>
  
  <p>where <strong>type:</strong> <code>Feature</code> and <strong>geometry.type:</strong> <code>Point</code> are written by default.Also the coordinates are latitude and longitude from"Location Details",further I want to store these generated result to get stored in another collection.</p>