# # Demonstrate reading strings from column headings or data column # for placement as plot titles or tic labels # Ethan A Merritt # 08-Mar-2003 # # Illustrate reading plot labels from column head in datafile # set title "Auto-labeling plots from text fields in datafile" set label 1 "Generate plot labels from first row in each column" set label 1 at graph 0.02, 0.85 tc lt 3 set label 2 "Generate x-axis labels from first column in each row" set label 2 at graph 0.02, 0.80 tc lt 3 set style data linespoints set ylabel "mm" set yrange [0:200] # set key autotitle columnhead plot 'ctg-y2.dat' using 2:xticlabel(1) index 2, \ '' using 2 index 3 # pause -1 " to plot again using x2ticlabels" # # Illustrate reading xtic axis labels from the datafile # reset set title "Read tic labels from a datafile column\nusing 'using ($0):2:xticlabels(1)'" set boxwidth 0.3 set style fill solid 1.000000 border -1 set bmargin 3 set pointsize 2 set yrange [0:180] set xrange [-0.5:11.5] set ylabel "mm" set tics scale 0.0 set grid y set xtics # set key autotitle columnhead plot 'ctg-y2.dat' using ($0-0.2):2 index 0 with boxes title "precipitation 1992-2000", \ '' using ($0+0.2):2 index 1 with boxes title " 2000-2001", \ '' using ($0):2 index 2 with linespoints lw 3 title "runoff 1992-2000", \ '' using ($0):2:xticlabels(1) index 3 with linespoints lw 3 title " 2000-2001" # pause -1 " to plot again using x2ticlabels" # set title "Same plot using x2ticlabels also" set x2tics plot 'ctg-y2.dat' using ($0-0.2):2 index 0 with boxes title "precipitation 1992-2000", \ '' using ($0+0.2):2 index 1 with boxes title " 2000-2001", \ '' using ($0):2 index 2 with linespoints lw 3 title "runoff 1992-2000", \ '' using ($0):2:x2ticlabels(1) index 3 with linespoints lw 3 title " 2000-2001" # pause -1 " to plot same data from table format" set title "Plot from table format (titles taken from column headers)" unset x2tics plot 'table.dat' using ($0-0.2):2 title columnhead(2) with boxes, \ '' using ($0+0.2):3 title columnhead(3) with boxes, \ '' using ($0):4 title columnhead(4) with linespoints, \ '' using ($0):5:xtic(1) title columnhead(5) with linespoints # pause -1 " to show double use of y values" # set title "Plot actual y-value as a label" plot 'table.dat' using 0:2:xtic(1) title columnhead with boxes, \ '' using 0:2:2 with labels center offset 0,1 notitle pause -1 " to show use of boxed labels" # # # Not all terminals support boxed labels set key box opaque set yrange [20:120] set grid x set style textbox opaque set title "Plot using boxed labels" plot 'table.dat' using 0:2:xtic(1) title col with lines lw 3, \ '' using 0:2:2 with labels center boxed notitle # pause -1 " to end demo" reset