Analyze the Taxicab GPS data to count on each taxi’s influence on the traffic and use different colors to visualize the degree and plot the road system on map

#Get the JSON file for plotting

1. Get the map GPS data for the intereted city(Shenzhen) from the OpenStreetMap by defining the bounding box of the city and export into a xml file.
2. Get the traffic GPS data and prepare it into a csv file.
3. Run the DrawMap.ipynb to preprocess the data and the output is a JSON file for plotting the map.

1. Install NODEJS first, select the version that matches your environment, then go to the directory of the project.
2. Install dependencies, you should finish this step without any issue

  npm install

3. Start the node server, wait until see "Example app listening on port 3000!" in your console.

  node server

4. Hit localhost:3000

When you go to the localhost:3000, the data begins loading and wait until map shows. It may take like 1 minitues.

Click the Export Button. Since transform a svg to png also requires a long time, a page that tells you the data is processing will appear. Wait until this page disappear. The old svg will be replaced by a png.

Then right click the page and select "save image as" and you will get the map!

You can get a sample image here Sample Image