NAME

       hdiff - compares two HDF files and reports the differences

SYNOPSIS

       hdiff [-V] [-b] [-g] [-s] [-d] [-D] [-S] [-v var1[,...]] [-u var1[,...]] [-e count] [-t
             limit] [-p relative] file1 file2

DESCRIPTION

       hdiff compares two HDF files and reports the differences.

OPTIONS

       -V     Display version of the HDF4 library and exit

       -b     Verbose mode

       -g     Compare global attributes only

       -s     Compare SD local attributes only

       -d     Compare SD data only

       -D     Compare Vdata data only

       -S     Print statistics

       -v var1[,...]
              Compare SD data on variable(s) var1,...  only

       -u var1[,...]
              Compare vdata on variable(s) var1,... only

       -e count
              Print difference up to count number for each variable

       -t limit
              Print difference when it is greater than limit

       -p relative
              Print difference when it is greater than a relative limit

       file1  File name of the first HDF file

       file2  File name of the second HDF file

       The 'count' value must be a positive integer

       The 'limit' and 'relative' values must be positive numbers

       The -t compare criteria is |a - b| > limit

       The -p compare criteria is |(b-a)/a| > relative

       Return codes: 0 (no differences found), 1 (differences found)

                                           28 May 2016                                   hdiff(1)