Analyzing the GRIB Data Project

1. Analyzing the GRIB Data Project Practice Final Presentation November 22,2013 Jiajun Chen Department of Computer Science University of Miami

2. Agenda • Background information • Design and Status • What I’ve done • What I am going to do next • Demo • Q&A

3. Background Information • GRIB data: to demonstrate the forecast weather data • Mostly used in meteorology • Easy to access • Can be appended to each other or broken down easily • Can tell: • When • Where • What

4. -The GRIB data is useful --Different sources --Which one is the the most reliable source? This is the reason why we have this project.

5. Design and Status && What I’ve done Log Source 1? Source 2?

6. A GIRB file has: Time Latitude Longitude UGRD VGRD Pressure We need: • Main • GridFileData--- Open files • Latitude --- Store Latitude • Longitude --- Store Longitude • GribPoint --- Store values

8. Import: Since the GRIB files have been converted to .csv files.. The javacsv library

9. Here is how it works…

10. In Main: • Call the JFileSelector() • --- return path(s) • Pass the path(s) to the CsvList.class

11. In CsvList.class: Read the .csv file Separate the data into different arraylists Set up the data in the way we want lookForVGRD() lookForPressure() latExist() lonExist() CsvWriter() equaliLists()

14. In GridFileData.class • Convert time into another format • Initialize Latitude • In Latitude.class • Initialize Longitude • In Longitude.class • Initialize GribPoint • In GribPoint.class • Set relevant data from the file to the local variables • Calculations • Convert units

15. Tried but failed • Tried to use JFreeChart to plot the data • Tried to use ThreadPool to speed up the program • Tired to use Jtable to print the data in the interface

17. What I am going to do next Finish the calculation and the comparison parts Plot the result Speed up the program Finish implementing the interface

18. Q&A