# set terminal png transparent nocrop enhanced font arial 8 size 420,320 
# set output 'histograms.8.png'
set border 3 front linetype -1 linewidth 1.000
set boxwidth 0.8 absolute
set style fill   solid 1.00 noborder
set grid nopolar
set grid noxtics nomxtics ytics nomytics noztics nomztics \
 nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
set grid layerdefault   linetype 0 linewidth 1.000,  linetype 0 linewidth 1.000
set key bmargin center horizontal Left reverse enhanced autotitles columnhead nobox
set style histogram rowstacked title  offset character 2, 0.25, 0
set datafile missing '-'
set style data histograms
set xtics border in scale 1,0.5 nomirror rotate by -45  offset character 0, 0, 0 
set xtics   ("1891-1900" 0.00000, "1901-1910" 1.00000, "1911-1920" 2.00000, "1921-1930" 3.00000, "1931-1940" 4.00000, "1941-1950" 5.00000, "1951-1960" 6.00000, "1961-1970" 7.00000, "1891-1900" 9.00000, "1901-1910" 10.0000, "1911-1920" 11.0000, "1921-1930" 12.0000, "1931-1940" 13.0000, "1941-1950" 14.0000, "1951-1960" 15.0000, "1961-1970" 16.0000, "1891-1900" 18.0000, "1901-1910" 19.0000, "1911-1920" 20.0000, "1921-1930" 21.0000, "1931-1940" 22.0000, "1941-1950" 23.0000, "1951-1960" 24.0000, "1961-1970" 25.0000)
set ytics border in scale 0,0 mirror norotate  offset character 0, 0, 0 autofreq 
set ztics border in scale 0,0 nomirror norotate  offset character 0, 0, 0 autofreq 
set cbtics border in scale 0,0 mirror norotate  offset character 0, 0, 0 autofreq 
set title "Immigration from different regions\n(give each histogram a separate title)" 
set xlabel "(Same plot using rowstacked rather than clustered histogram)" 
set xlabel  offset character 0, -2, 0 font "" textcolor lt -1 norotate
set ylabel "Immigration by decade" 
set yrange [ 0.00000 : 900000. ] noreverse nowriteback
i = 24
plot newhistogram "Northern Europe", 'immigration.dat' using 6:xtic(1) t 6, '' u 13 t 13, '' u 14 t 14, newhistogram "Southern Europe", '' u 9:xtic(1) t 9, '' u 17 t 17, '' u 22 t 22, newhistogram "British Isles", '' u 10:xtic(1) t 10, '' u 21 t 21