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.\" RCSid "$Id"
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.TH PROTATE 1 10/27/98 RADIANCE
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.SH NAME
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protate - rotate a RADIANCE picture.
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.SH SYNOPSIS
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.B protate
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[
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.B \-c
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][
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.B \-r
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]
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.B input
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[
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.B output
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]
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.SH DESCRIPTION
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.I Protate
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rotates a RADIANCE picture 90 degrees.
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This is useful for output on hardcopy devices with aspect ratios opposite
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to the input picture.
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By default, the image is rotated clockwise.
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The
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.I \-r
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option may be used to rotate the image counter-clockwise instead.
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.PP
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The
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.I \-c
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option indicates that the action is to correct an improper original
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image orientation, thus the recorded scanline ordering should not
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be changed.
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.SH NOTES
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To rotate an image 180 degrees, use
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.I pflip(1)
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with both the
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.I -h
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and
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.I -v
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options.
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.SH AUTHOR
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Greg Ward
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.SH "SEE ALSO"
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getinfo(1), pcompos(1), pfilt(1), pflip(1), psign(1), rpict(1)
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