libtiff/man/tiffset.1

.\"
.\" Copyright (c) 1988-1997 Sam Leffler
.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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.if n .po 0
.TH TIFFSET 1 "December 3, 2012" "libtiff"
.SH NAME
tiffset \- set or unset a field in a
.SM TIFF
header
.SH SYNOPSIS
.B tiffset
[
.I options
]
.I filename.tif
.SH DESCRIPTION
.I Tiffset
sets the value of a
.SM TIFF
header to a specified value or removes an existing setting.
.SH OPTIONS
.TP
.BI \-d " dirnumber"
change the current directory (starting at 0).
.TP
.BI \-s " tagnumber" "\fR [\fP" " count" "\fR ]\fP" " value ..."
Set the value of the named tag to the value or values specified.
.TP
.BI \-sd " diroffset"
change the current directory by offset.
.TP
.BI \-sf " tagnumber filename"
Set the value of the tag to the contents of filename.  This option is
supported for ASCII tags only.
.TP
.BI \-u " tagnumber"
Unset the tag.
.SH EXAMPLES
The following example sets the image description tag (270) of a.tif to
the contents of the file descrip:
.RS
.nf
tiffset \-sf 270 descrip a.tif
.fi
.RE
.PP
The following example sets the artist tag (315) of a.tif to the string
``Anonymous'':
.RS
.nf
tiffset \-s 315 Anonymous a.tif
.fi
.RE
.PP
This example sets the resolution of the file a.tif to 300 dpi:
.RS
.nf
tiffset \-s 296 2 a.tif
tiffset \-s 282 300.0 a.tif
tiffset \-s 283 300.0 a.tif
.fi
.RE
.PP
Set the photometric interpretation of the third page of a.tif to
min-is-black (ie. inverts it):
.RS
.nf
tiffset -d 2 -s 262 1 a.tif
.fi
.RE
.SH "SEE ALSO"
.BR tiffdump (1),
.BR tiffinfo (1),
.BR tiffcp (1),
.BR libtiff (3TIFF)
.PP
Libtiff library home page:
.BR http://www.simplesystems.org/libtiff/