
vgettilt(1)                  Khoros                   vgettilt(1)

PROGRAM
     vgettilt - computes the best-fit plane parameters for the
     input VIFF file

SYNTAX
     vgettilt

     -i             input image

     -f             output ASCII file

     [-m]           statistics operation masking image

     [-V]           Gives the version for vgettilt

     [-U]           Gives the usage for vgettilt

     [-P]           Prompts for command line options

     [-A [file1]]   Creates the answer file called vgettilt.ans
                    or file1

     [-a [file1]]   Uses vgettilt.ans or file1 as the answer file

DESCRIPTION
     vgettilt computes the least-squares best fit plane for an
     image.  The plane will be given by f(x,y)=Ax+By+C with the
     tilt coefficients in inverse pixels.

     If the maskfile is specified then only those points in the
     input image with a corresponding nonzero maskfile pixel are
     used in the computation.  The number of points actually con-
     tributing to the computation is given with the output data.

     The output device or file is specified after the -f option,
     a filename of # will send the output to stderr.

REQUIRED ARGUMENTS
     -i     type: infile
            desc: input image

     -f     type: outfile
            desc: output ASCII file

OPTIONAL ARGUMENTS
     -m     type: infile
            desc: statistics operation masking image

EXAMPLES
     vgettilt -i input -f tilt_info -m mask

SEE ALSO
     intro(1), verror(3), vgparms(3), vutils(3), lvgettilt(3)
     vtilt(1), vdetilt(1)

RESTRICTIONS
     vgettilt will not operate on bit or complex data storage
     types, and will not work on multiband images.

COPYRIGHT
     Copyright 1991, University of New Mexico.  All rights
     reserved.

Khoros                    Release: 1.0                          1

