HDFLook_MODIS  HDF data file viewer
===================================

	READ AND DISPLAY HDF DATA SETS:
  		-raster images
  		-SDS  ( up to 6 array indexes, MODIS compress file format)
			(MODIS Quality Control)
		-VDATA

Distribution files:
===================


MAPS.tar.Z      		*Coast files and Fonts  used by HDFlook to overlap maps on the MODIS images
					-MAPS
					-MAPS/Fonts
HOWTO_HDFLOOK.tar.Z 		*Examples: how to use HDFLook in background with command files
HDFLOOK_COMMANDS.Z		*Background command file keyword description


ENGLISH_MANUAL_HDFLook.ps.gz 	*Manuals 
FRENCH_MANUAL_HDFLook.ps.gz

LINUX_REDHAT.....HDFLook.tar.gz  *Computer binaries
					-HDFlook
					-HDFLook.ad

cp HDFlook /usr/local/bin
cp HDFLook.ad /usr/lib/X11/app-defaults

=======================


At the first use of HDFLook, the user has to define two environment variables with:
- the absolute path of the directory containing the coast and river map data files.
- the absolute path of the directory used by temporary files.

	for example: in csh:
        	setenv HDFLOOKMAPS /usr/local/Maps
        	setenv HDFLOOKTMP /usr/tmp
	for example: in sh:
        	HDFLOOKMAPS=/usr/local/Maps ; export HDFLOOKMAPS
		HDFLOOKTMP=/usr/tmp ; export HDFLOOKTMP

Note: if HDFLook is NOT a part of the Msphinx package the user has to download the
	MAPS.tar.Z file to get the map and font files

Note: if HDFLook is a part of the Msphinx package the  directory containing the coast maps
is located under ????/Mfiles/Maps directory


--------------------
Main characteristics
--------------------

   * Visualization of the HDF contents for the following formats:
        o SDS (Scientific Data Set)
        o Vfiles
        o ``Raster images'' 24 bits or 8 bits with look up table.

   * Visualization of slices of data: up to 6 indexes
   * Display of the file attributes
   * Automatic detection of particular filling values (mask)
   * Extraction and dump of binary files stored as simple matrices of (lines
     x columns)
   * Display data sets as ASCII pages of numbers
   * Plot of transects and histograms on image planes
   * Plot of SDS records
   * Production of images and graphics PostScript prints.

--------------------
with command lines
--------------------

   * extract the ancillary data of a SDS.
   * print a PostScript image
   * export (Raw or calibrated) SDS records to binary files
   * export (Raw or calibrated) SDS records to HDF files
   * export RGB images to jpeg files
   * export RGB images to hdf files

        On HDF-EOS MODIS format:

   * build reprojected SDS mosaic to binary files
   * build reprojected RGB mosaic to binary files

        Connected to Msphinx:

   * send to Msphinx all (raw or reprojected) MODIS data and then use the
     Msphinx command lines to build sophisticate outputs.

--------------------
with the AERONET data base
--------------------

In conjunction with the AERONET data base, HDFLook is able to provide a fast
validation of the aerosol algorithm by downloading directly the AERONET
Optical thickness value for the corresponding MODIS visualized granule.

----
FAQ	
----

any trouble loading the widget "colors background" ->  modify HDFLook.ad

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if you got the software from netscape or explorer:
 send your email to be in the distribution list to: louis@loa.univ-lille1.fr
 Your comments will be useful for the software evolution.

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