gnuplot file to plot a RGBCMYK table and save png files

LUT_K.plt

#!/gnuplot
#
#    
#      G N U P L O T
#    	Version 4.6 patchlevel 3    last modified April 2013
#    	Build System: MS-Windows 32 bit 
#    
#    	Copyright (C) 1986-1993, 1998, 2004, 2007-2013
#    	Thomas Williams, Colin Kelley and many others
#    
#    	gnuplot home:     http://www.gnuplot.info
#    	faq, bugs, etc:   type "help FAQ"
#    	immediate help:   type "help"  (plot window: hit 'h')
# set terminal wxt 0
# set output
unset clip points
set clip one
unset clip two
set bar 1.000000 front
set border 31 front linetype -1 linewidth 1.000
set timefmt z "%d/%m/%y,%H:%M"
set zdata 
set timefmt y "%d/%m/%y,%H:%M"
set ydata 
set timefmt x "%d/%m/%y,%H:%M"
set xdata 
set timefmt cb "%d/%m/%y,%H:%M"
set timefmt y2 "%d/%m/%y,%H:%M"
set y2data 
set timefmt x2 "%d/%m/%y,%H:%M"
set x2data 
set boxwidth
set style fill  empty border
set style rectangle back fc lt -3 fillstyle   solid 1.00 border lt -1
set style circle radius graph 0.02, first 0, 0 
set style ellipse size graph 0.05, 0.03, first 0 angle 0 units xy
set dgrid3d 17,17, 1
set dummy x,y
set format x "% g"
set format y "% g"
set format x2 "% g"
set format y2 "% g"
set format z "% g"
set format cb "% g"
set format r "% g"
set angles radians
unset grid
set raxis
set key title ""
set key inside right top vertical Right noreverse enhanced autotitles nobox
set key noinvert samplen 4 spacing 1 width 0 height 0 
set key maxcolumns 0 maxrows 0
set key noopaque
unset key
unset label
unset arrow
set style increment default
unset style line
unset style arrow
set style histogram clustered gap 2 title  offset character 0, 0, 0
unset logscale
set offsets 0, 0, 0, 0
set pointsize 1
set pointintervalbox 1
set encoding default
unset polar
unset parametric
unset decimalsign
set view 60, 300, 1, 1
set samples 100, 100
set isosamples 10, 10
set surface
unset contour
set clabel '%8.3g'
set mapping cartesian
set datafile separator whitespace
unset hidden3d
set cntrparam order 4
set cntrparam linear
set cntrparam levels auto 5
set cntrparam points 5
set size ratio 0 1,1
set origin 0,0
set style data points
set style function lines
set xzeroaxis linetype -2 linewidth 1.000
set yzeroaxis linetype -2 linewidth 1.000
set zzeroaxis linetype -2 linewidth 1.000
set x2zeroaxis linetype -2 linewidth 1.000
set y2zeroaxis linetype -2 linewidth 1.000
set ticslevel 0
set mxtics default
set mytics default
set mztics default
set mx2tics default
set my2tics default
set mcbtics default
set xtics border in scale 1,0.5 mirror norotate  offset character 0, 0, 0 autojustify
set xtics autofreq  norangelimit
set ytics border in scale 1,0.5 mirror norotate  offset character 0, 0, 0 autojustify
set ytics autofreq  norangelimit
set ztics border in scale 1,0.5 nomirror norotate  offset character 0, 0, 0 autojustify
set ztics autofreq  norangelimit
set nox2tics
set noy2tics
set cbtics border in scale 1,0.5 mirror norotate  offset character 0, 0, 0 autojustify
set cbtics 128 norangelimit
set rtics axis in scale 1,0.5 nomirror norotate  offset character 0, 0, 0 autojustify
set rtics autofreq  norangelimit
set title "" 
set title  offset character 0, 0, 0 font "" norotate
set timestamp bottom 
set timestamp "" 
set timestamp  offset character 0, 0, 0 font "" norotate
set rrange [ * : * ] noreverse nowriteback
set trange [ * : * ] noreverse nowriteback
set urange [ * : * ] noreverse nowriteback
set vrange [ * : * ] noreverse nowriteback
set xlabel "G" 
set xlabel  offset character 0, 0, 0 font "" textcolor lt -1 norotate
set x2label "" 
set x2label  offset character 0, 0, 0 font "" textcolor lt -1 norotate
set xrange [ 0.00000 : 256.000 ] noreverse nowriteback
set x2range [ * : * ] noreverse nowriteback
set ylabel "B" 
set ylabel  offset character 0, 0, 0 font "" textcolor lt -1 rotate by -270
set y2label "" 
set y2label  offset character 0, 0, 0 font "" textcolor lt -1 rotate by -270
set yrange [ 0.00000 : 256.000 ] noreverse nowriteback
set y2range [ * : * ] noreverse nowriteback
set zlabel "" 
set zlabel  offset character 0, 0, 0 font "" textcolor lt -1 norotate
set zrange [ 0.00000 : 256.000 ] noreverse nowriteback
set cblabel "" 
set cblabel  offset character 0, 0, 0 font "" textcolor lt -1 rotate by -270
set cbrange [ * : * ] noreverse nowriteback
set zero 1e-008
set lmargin  -1
set bmargin  -1
set rmargin  -1
set tmargin  -1
set locale "Japanese_Japan.932"
set pm3d explicit at s
set pm3d scansautomatic
set pm3d interpolate 1,1 flush begin noftriangles nohidden3d corners2color mean
set palette positive nops_allcF maxcolors 0 gamma 1.5 color model RGB 
set palette rgbformulae 7, 5, 15
set colorbox default
set colorbox vertical origin screen 0.9, 0.2, 0 size screen 0.05, 0.6, 0 front bdefault
set style boxplot candles range  1.50 outliers pt 7 separation 1 labels auto unsorted
set loadpath 
set fontpath 
set psdir
set fit noerrorvariables
#GNUTERM = "wxt"
set term png
do for [j=0:16]{
set output sprintf("grid-K-Red%03d.png", j*16)
set title sprintf("grid-K-Red%03d", j*16)
splot 'rgbcmyk.tsv' using 2:3:7 every ::j*289::j*289+289:1 with lines palette
}
set output
#    EOF