# set terminal pngcairo background "#ffffff" enhanced font "arial,8" fontscale 1.0 size 540, 360 # set output 'rgbalpha.1.png' set border 31 front linecolor rgb "gold" linewidth 1.000 dashtype solid set key title "Plot style rgbalpha" center set key at screen 0.75, 0.75 left bottom vertical Left noreverse enhanced autotitle nobox set key noinvert samplen 1 spacing 1 width -7 height 0 set style increment default set object 1 rect from screen 0, 0 to screen 1, 1 set object 1 behind clip lw 1.0 dashtype solid fc rgb "grey10" fillstyle solid 1.00 noborder set samples 128, 128 set size ratio 0.95 1,1 set style data lines set xrange [ 0.00000 : 128.000 ] noreverse nowriteback set x2range [ * : * ] noreverse writeback set yrange [ 0.00000 : 128.000 ] noreverse nowriteback set y2range [ * : * ] noreverse writeback set zrange [ * : * ] noreverse writeback set cbrange [ * : * ] noreverse writeback set rrange [ * : * ] noreverse writeback set lmargin at screen 0.1 set bmargin at screen 0.1 set tmargin at screen 0.9 ## Last datafile plotted: "lena.rgb" plot 100.*(.4+sin(x/5.)/(x/5.)) lw 5 title 'solid line', 'lena.rgb' binary array=(128,128) format="%uchar" flipy using 1:2:3:(2.*column(0)) with rgbalpha title "Lena with linear\nalpha gradient"