ISIN

 Projection     : Integerized Sinusoidal
 General class  : pseudo-cylindrical
 Earth model    : sphere

Defining the MAPUNITS:

 MapUnits "isin"      ! Standard name
 MapUnits "isin d700" ! Standard name and ellipsoid

Other parameters:

 TrueOriginLongitude "longitude_of_origin"  ! Required, for True origin
 NumberZones         "#_longitudinal_zones" ! Required
 JustifyFlag         "extra_column_to_add"  ! Required
 FalseEasting        "false_easting"        ! Optional, default is zero
 FalseNorthing       "false_northing"       ! Optional, default is zero

NumberZones is one of the following values, that in turn imply the following resolutions:

                            ----------- Pixel Resolution -----------
                              Actual               Nominal
                              ------      --------------------------
NumberZones (a)                ISIN       Approximate    Approximate
                              meters        meters       geographic
------------------------    ----------    -----------    -----------
21600 ( = 180 x 60 x 2 )    926.625433       1000        30   arcsec
43200 ( = 180 x 60 x 4 )    463.312717        500        15   arcsec
86400 ( = 180 x 60 x 8 )    231.656358        250         7.5 arcsec

NOTE: (a) 180 is the number of degrees between 90dN and 90dS
           60 is the number of minutes per degree
            2 is the number of 30   arcsec intervals per minute
            4 is the number of 15   arcsec intervals per minute
            8 is the number of  7.5 arcsec intervals per minute

The JustifyFlag is used to indicate what to do with zones that have an odd number of columns:

0, indicates there has been an extra column added on the right

1, indicates there has been an extra column added on the left

2, indicates the number of columns are calculated so that there
   is always an even number of columns in each zone.

ISIN is normally used for MODIS imagery. The earth model used for MODIS imagery (a sphere with a radius of 6371007.181 meters) is a sphere that was derived as a best surface area fit of the WGS84 ellipsoid.