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Web-based On-demand Global NDVI Data Services

Presenter : Dayong Shen. Web-based On-demand Global NDVI Data Services. Center for Spatial Information Science and Systems (CSISS), George Mason University. -MOD13Q1 : 16-day 250-meter a gridded level-3 product in the Sinusoidal projection. It is MODIS standard product.

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Web-based On-demand Global NDVI Data Services

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  1. Presenter : DayongShen Web-based On-demand Global NDVI Data Services Center for Spatial Information Science and Systems (CSISS), George Mason University

  2. -MOD13Q1 : 16-day 250-meter a gridded level-3 product in the Sinusoidal projection. It is MODIS standard product. -We downloaded and processed the data spanning over 2000-2012. -The datasets have prefect integrity as there is no missing date since 2000/02/18. Source data: HDF-EOS (MOD13Q1)

  3. Web-based on-demand NDVI services NDVImax,NDVImin,VCIyyyy.mm.dd: global GeoTIFF image data VWMS,VWCS

  4. Load Tile Data Bad Quality Filtering Add Land/Water Mask Big/TIFF Creation Big/TIFF Compression Flow chart TIFF Output

  5. gdalinfo gdal_translate gdaladdo gdalwarp gdal_merge.py GDAL Utilities

  6. #include <sys/types.h> #include <dirent.h> #include <stdio.h> #include <stdlib.h> #include <iostream> #include <string> #include <errno.h> #include "gdal_priv.h" #include "cpl_string.h" #include "ogr_spatialref.h" #include "ogr_api.h" C-C++ program

  7. Data Quality

  8. Both VWMS and VWCS are pretty fast Time Test

  9. VWMS 1

  10. VWMS 2

  11. - VWCS has been developed using C-C++, GDAL, Java and JavaScript - VWCS Will be available on the same web portal soon Ongoing Work

  12. http://gis.csiss.gmu.edu/GADMFS/ VWMS Web Link

  13. Questions and Comments?

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