.TH PHAT 1
.SH NAME
phat \- persistent homology utility from the PHAT library
.SH SYNOPSIS
.B phat
[\fIoptions\fR]
\fIinput_file\fR
\fIoutput_file\fR
.SH DESCRIPTION
.B phat
is a simple persistent homology utility built using the PHAT
library. It reads a (filtered) boundary matrix and applies an
algorithm of the user's choosing to compute the associated persistent
homology module.
.SH OPTIONS
.TP
.BR \-\-ascii
Use ASCII input file.
.TP
.BR \-\-binary
Use binary input file (default).
.TP
.BR \-\-help
Print help screen.
.TP
.BR \-\-dualize
Use dualization approach.
.TP
.BR \-\-vector_vector ", " \-\-vector_heap ", " \-\-vector_set ", " \-\-vector_list ", " \-\-full_pivot_column ", " \-\-sparse_pivot_column ", " \-\-heap_pivot_column ", " \-\-bit_tree_pivot_column
Choose a matrix representation. Default is \fB\-\-bit_tree_pivot_column\fR.
.TP
.BR --standard ", " \-\-twist ", " \-\-chunk ", " \-\-chunk_sequential ", " \-\-spectral_sequence ", " \-\-row
Choose a reduction algorithm. Default is \fB\-\-twist\fR.
.SH ARGUMENTS
.TP
.BR input_file
Input boundary matrix file.
.TP
.BR output_file
Output file for persistence diagram.