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.\"
.IX Title "IDNGRAM_MERGE 1"
.TH IDNGRAM_MERGE 1 "2019-12-06" "perl v5.30.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
idngram_merge \- merge idngram file into one
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBidngram_merge\fR [\fIoption\fR]... \fIidngram_file\fR...
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBidngram_merge\fR merge multiple idngram file, each of them are sorted
[id1,...,idN,freq] array, into one idngram file. For those id1..idN which 
appear in more than one files, only one item will appear in the final file, 
and its freq are summed. The idngram files are original generated by 
\&\fBids2ngram\fR.
.SH "OPTIONS All the following options are mandatory."
.IX Header "OPTIONS All the following options are mandatory."
.IP "\fB\-n\fR, \fB\-\-NMax\fR \fIN\fR" 4
.IX Item "-n, --NMax N"
Specify the N\-gram of source data file.
.IP "\fB\-o\fR, \fB\-\-out\fR \fIoutput-file\fR" 4
.IX Item "-o, --out output-file"
Specify the final merged idngram file.
.SH "EXAMPLE"
.IX Header "EXAMPLE"
Following example merge 2 id3gram files into a large one:
.PP
.Vb 1
\&    B<idngram_merge \-n3 \-o all.id3gram first.id3gram second.id3gram>
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
Originally written by Phill.Zhang <phill.zhang@sun.com>.
Currently maintained by Kov.Chai <tchaikov@gmail.com>.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBids2ngram\fR(1).