The dataset of trip information of Citi Bike is got from s3.amazonaws.com, which is an endpoint for a cloud file storage product offered by Amazon Web Services (AWS). In order to increase the reproducibility, the data acquiring process is defined by a function named “GetCitibikeCSV” with the parameter “DataString”. When the needed time period transfers to “DataString”, the corresponding data in that time period is downloaded as CSV format. This paper is based on a month data (July, 2015) to do the test. As Figure 2 shown, the original dataset is really rich.