.ds Vn 1.12
.TH vflip 1Vi "24 April 1993" "Vista Version \*(Vn"
.SH NAME
vflip \- flip an image horizontally and/or vertically
.SH SYNOPSIS
\fBvflip\fR [\fB-hor\fR] [\fB-vert\fR] [\fB-\fIoption\fR ...] \
[\fIinfile\fR] [\fIoutfile\fR]
.SH DESCRIPTION
\fBvflip\fP flips images horizontally and/or vertically.
.PP
A horizontal flip exchanges the left and right sides of an image. A 
vertical flip exchanges the top and bottom. 
.SH "COMMAND LINE OPTIONS"
\fBvflip\fP accepts the following options:
.IP \fB-help\fP 15n
Prints a message describing options.
.IP "\fB-in\fP \fIinfile\fP"
Specifies a Vista data file containing the input images.
.IP "\fB-out\fP \fIoutfile\fP"
Specifies where to write the flipped images as a Vista data file.
.IP "\fB-horizontal\fP"
Specifies that a horizontal flip should be performed.
.IP "\fB-vertical\fP"
Specifies that a vertical flip should be performed.
.PP
If both \fB-horizontal\fP and \fB-vertical\fP are specified, the horizontal 
flip is performed first. If neither is specified, the images are 
nevertheless flipped horizontally. 
.SH "SEE ALSO"
.na
.nh
.BR vrotate (1Vi),
.BR vtranspose (1Vi),
.BR VImage (3Vi),
.BR Vista (7Vi)
.ad
.hy
.SH AUTHOR
Daniel Ko <ko@cs.ubc.ca>