BUILD GLOBAL 250 m MODIS images

The goal is to create a browse image at 250m resolution:
- the full image is width=172800 height=76800.
- to match the 32 bit computers and to fit the 2 giga bytes maximum file size.

The image is divided into 8 areas of width=21600 and height=76800 and HDFLook will run 8 times with a modification of the lontitude min max extraction area.
The final image can be visualized by the Msphinx software as a single huge image.
Image area is Lontitude +-180 degrees latitude +-80 degrees.
Have a look on:
http://www-loa.univ-lille1.fr/MODIS/Model.html

Click on the image to enlarge

HDFLook command file

#  WORLD 250m MOSAIC : SLICE BY SLICE (76800 lines of 21600 columns)
# input files:
# MOD02QKM.A2002280.0030.003.2002280112751.hdf
# MOD02HKM.A2002280.0030.003.2002280112751.hdf
# GSUB1.A2002280.0030.2003119025135331218.hdf or MOD021KM.A2002280.0030.003.2002280112751.hdf

verbose
clear_data

#SET THE INPUT/OUPUT DIRECTORIES

set_tmp_directory  		/tmp
set_output_directory            /DATA2/MODIS/OCTOBER7/OUTPUTS
set_input_directory             /DATA2/MODIS/OCTOBER7/TERRA/
set_input_directory             /DATA2/MODIS/OCTOBER7/TERRA500
set_input_directory             /DATA2/MODIS/OCTOBER7/TERRA250

#SET THE PROJECTION GEOMETRY

set_projection_to_geometry ProjectionTo="LINEAR"  WidthTo=21600 HeightTo=76800\
                        LatitudeMinTo=-80.0 LatitudeMaxTo=80.0 \
                        LongitudeMinTo=0.0 LongitudeMaxTo=45.0

#SELECT THE IMAGE SETTING

set_image_background            color=White
set_misc_options   OnlyDay=Yes CloudsRGBEnhance=Yes

#SET THE INPUT IMAGES

set_input_hdf_file              /DATA2/MODIS/OCTOBER7/TERRA250/MOD02QKM*

#CREATE THE OUTPUT IMAGE
set_image_RGB_composite VISIBLE

create_MODIS_RGB_Mosaic     FileName="october_7_2002_250m"  ClearFile=Yes    RGBMode="LogStandard"