tresample.1 - plan9port - [fork] Plan 9 from user space
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       tresample.1 (1085B)
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            1 .TH RESAMPLE 1
            2 .SH NAME
            3 resample \- resample a picture
            4 .SH SYNOPSIS
            5 .B resample
            6 [
            7 .B -x
            8 .I size
            9 ] [
           10 .B -y
           11 .I size
           12 ] [
           13 .I file
           14 ]
           15 .SH DESCRIPTION
           16 .I Resample
           17 resamples its input image (default standard input) to a new size.
           18 The image is decimated or interpolated using
           19 a Kaiser window.
           20 .PP
           21 The size of the resampled image can be specified
           22 with the
           23 .B -x
           24 and
           25 .B -y
           26 options.
           27 An unadorned value sets the number of pixels of that dimension; a suffixed percent sign specifies a percentage.
           28 If only one of
           29 .B -x
           30 or
           31 .B -y
           32 is given, the other dimension is scaled to preserve
           33 the aspect ratio of the original image.
           34 Thus,
           35 .B -x50%
           36 will reduce the image to half its original dimension in both
           37 .B x
           38 and
           39 .BR y .
           40 .PP
           41 The input should be a Plan 9 image
           42 as described in 
           43 .MR image (7) ,
           44 and the output will be a compressed 24-bit
           45 .B r8g8b8
           46 image.
           47 To uncompress the image or change the pixel format, use
           48 .I iconv
           49 (see
           50 .MR crop (1) ).
           51 .PP
           52 .SH SOURCE
           53 .B \*9/src/cmd/resample.c
           54 .SH "SEE ALSO
           55 .MR crop (1) ,
           56 .MR image (7)
           57 .SH BUGS
           58 Faster algorithms exist, but this implementation produces correct pictures.