Gnuplot: xtics - place lines in ticks

Question

I am new to gnuplot and am trying to create a complex histogram for a project. The problem I am facing is that I cannot put ticlabels on the x axis (even if I could, they were not formatted in a neat way). My gp file is as follows:

Here is a snapshot of my data file:

CC P1-X P1-Y P2-X P2-Y
1 0.1097586  0.3262812  1.980848  5.9098402
2 0.1010986  0.2988812  0.9966702  5.8378412
3 0.4017474  0.7559452  4.41813  11.7404132
4 0.1028442  0.2974772  1.418744  6.0554552
5 0.1097316  0.3216112  1.967492  5.8007364
6 0.954794  0.3004874  0.9568386  5.778537

And here is my gp file:

set title "GCC compilation option by average execution time as stacked histogram"
set terminal jpeg medium
set output "histosmalldata.jpeg"
set boxwidth 0.9 absolute
set style fill solid 1.00 border -1
set key autotitle columnheader
set key outside right top vertical Left reverse enhanced autotitles columnhead nobox
set key invert samplen 4 spacing 1 width 0 height 0 
set style histogram rowstacked title  offset character 0, 0, 0
set style data histograms
set xtics border in scale 1,0.5 nomirror rotate by -45  offset character 0, 0, 0
set xtics norangelimit
set xtics ("O2-ffast-math-finline-functions" 1, "O2-funroll-loops-march=barcelona-ffast-math-finline-functions" 2, "GCCFLAGS_O0" 3, "O2-ftree-vectorize-funroll-loops-march=barcelona" 4, "GCCFLAGS_O2" 5, "O2-ftree-vectorize-funroll-loops-ffast-math" 6)
set xtics 1,6 nomirror 
set ytics 0,100 nomirror
set ytics 1
set yrange [0:20]
set ylabel "Time"
set xlabel "GCC Compiler Options"
plot 'smalldata' using 2:xtic(1) ti col, '' using 3 ti col, '' using 4 ti col, '' using 5 ti col

This is a graphic image:

Now, on the x axis, I have 1,2,3 - 6, which I do not want, instead I would like "O2-ffast-math-finline-functions" for 1, etc. in a neat formatted way.

I wrote this script after consulting some examples from the gnuplot page and am not very good at certain verbs, therefore, in addition to the solution, any general comments are welcome.

Thanks,
Sayansk

Answer 1

xtics , , .

set:

set xtics border in scale 1,0.5 nomirror rotate by -45  offset character 0, 0, 0\
         norangelimit\
         ("O2-ffast-math-finline-functions" 1,\
          "O2-funroll-loops-march=barcelona-ffast-math-finline-functions" 2,\
          "GCCFLAGS_O0" 3, "O2-ftree-vectorize-funroll-loops-march=barcelona" 4,\
          "GCCFLAGS_O2" 5, "O2-ftree-vectorize-funroll-loops-ffast-math" 6)

, .

Answer 2

, ticlabels, . , :

set title "GCC compilation option by average execution time as stacked histogram"
set terminal png size 1500,1200 font "/Library/Fonts/Times New Roman Bold.ttf, 13"
set output 'hist_gcc_1.png'
set boxwidth 0.9 absolute
set style fill solid 1.00 border -1
set key outside right top vertical Left reverse enhanced autotitles columnhead nobox
set key invert samplen 4 spacing 1 width 0 height 0 
set style histogram rowstacked title offset character 0, 0, 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     norangelimit
set ytics 0,100 nomirror
set ytics 1
set yrange [0:20]
set ylabel "Time"
set xlabel "GCC Compiler Options"
plot 'data' using 2:xticlabels(1) ti col, '' using 3 ti col, '' using 4 ti col, '' using 5 ti col

dat :

CC P1-X P1-Y P2-X P2-Y
O2-ffast-math-finline-functions 0.1097586  0.3262812  1.980848 5.9098402
O2-funroll-loops-march=barcelona-ffast-math-finline-functions 0.1010986 0.2988812  0.9966702 5.8378412
GCCFLAGS_O0 0.4017474 0.7559452 4.41813 11.7404132
...