set term svg size 600,400 font "DejaVu,10"
set output 'German Wind and Solar 2014-07-01 to 2014-07-07.svg'

set title 'Germany Electricity Generation - 1st July week 2014'

set datafile separator ";"

set ytics out nomirror

# This won't affect histogram plots since they just treat the
# dates in the first columns as literal strings.
set format x "%m/%d"

# Setting xdata to time precludes the use of histograms.
set xdata time
set timefmt '%Y/%m/%d %H:%M'

set style fill solid border -1

set boxwidth 1 relative

set yrange [0:*]
set ylabel 'MW'

set xlabel 'Time'

# ($2+$3) is an expression meaning 'add the values in column 2 and
# column 3'; this is effectively the same as row-stacking.
# Data-series should be given in order of decreasing magnitude.
plot "1. Juliwoche.csv" u 1:($2+$3+$4) with boxes lc rgb "#ffd320" t "Photovoltaics", \
	"" using 1:($2+$3) with boxes lc rgb "#004586" t "Wind power", \
	"" using 1:2 with boxes lc rgb "#ff420e" t "Thermal/Nuclear"