################
# グラフの種類 #
################

reset
set encoding utf8
set terminal svg enhanced size 600,400 font "Arial:Bold,12" # svg
# set terminal pdf enhanced size 5in,3in font "Arial:Bold,12" # pdf
# set terminal png size 900,600 font "Arial,14" # png

data1 = "inputfile1.dat"
set output "out.svg"

# --- PARAMETRIC ---
# http://ayapin-film.sakura.ne.jp/Gnuplot/Primer/parametric.html

# set parametric

# --- POLAR ---
# http://ayapin-film.sakura.ne.jp/Gnuplot/Primer/polar.html

# set polar

# --- 3D PLOT ---

# set xyplane at 0 # <- position of xy-plane in z axis
# set hidden3d     # 図形の向こうのborderなどを隠す
# set contour      # 等高線 https://atatat.hatenablog.com/entry/gnuplot19_contour

# --- HEATMAP ---

# set pm3d map interpolate 0,0
# set palette rgbformulae 22,13,-31

################
#   枠の調整   #
################

# ---BORDER/AXIS ---

set border
unset zeroaxis # xzeroaxis, yzeroaxis

# ---RATIO ---
# https://miyabi-mathematics.hatenablog.com/entry/2017/01/15/202207
# http://dsl4.eee.u-ryukyu.ac.jp/DOCS/gnuplot/node105.html

set size ratio 2/(sqrt(5)+1) # 1:(y/x), -1 for 1:1 axes

# --- MARGIN ---

set lmargin 3
set rmargin 0
set tmargin 2
set bmargin 2
# unset margin

# --- GRID ---

# set nogrid
# set grid polar pi/6              # polar
# set grid x y z vertical          # 3D
set grid linetype 1 linewidth 0.75 linecolor "gray"

# --- AXIS: x, x2, y, y2, z, cb, r, t, u, v ---
#                  FONT       OFFSET        ROTATION

set title   font ",16" offset 0,-1      rotate by 0 center
set xlabel  font ",14" offset 0,1.0     rotate by 0 center # 3D: parallel
set ylabel  font ",14" offset 2.0,1.0   rotate by 90 center # 3D: parallel
# set x2label font ",14" offset 3,0.5     rotate by 0 center
# set y2label font ",14" offset -5,0.5    rotate by 0 center
# set zlabel  font ",14" offset 3,0       rotate by 0 center # 90

set xtics   font ",12" offset -0.0,0.5  rotate by 0 nomirror
set ytics   font ",12" offset 0.1,0     rotate by 0   mirror
# set x2tics  font ",12" offset 0,0       rotate by 0 nomirror
# set y2tics  font ",12" offset 0.1,0     rotate by 0 nomirror
# set ztics   font ",12" offset 2,0       rotate by 0 nomirror

# --- TICS ---

# set tics scale 1, 0.5 # default: 1, 0.5
# set tics in           # or out

# --- REPRESENTATION ---
# http://ayapin-film.sakura.ne.jp/Gnuplot/Primer/tics_label.html
# 表示形式の例

# set format x "%h"                             # default format
set format x "%.0Pπ"                            # 0π 1π 2π 3π ...
# set format y "%2.0t x 10^{%T}"                # 13 x 10^{5} etc.
# set format y2 "%5.2f"                         # 23.44 etc.
# set format z "10^{%L}"                        # 10^{3}, e^{4} etc.

# --- LOGSCALE ---
# 対数の場合はmticsが使えない

# set logscale x 10
# set logscale y 10
# set logscale x2 10
# set logscale y2 10
# set logscale z 10

# 横軸の微細化. log や exp など急峻な関数に, 計算量が爆発するので10^6 まで

set samples 200                              # default: 100

################
#定数,変数,関数#
################

# --- trigonometry ---
set angles radians # or angles

# linear fitting example
# F(x) = A0 * x + B0
# fit F(x) data0 using 1:2 every ::1::86 via A0, B0
# Ftitle = sprintf("F(v) = %2e v + %3f ", A0, B0)
# set label 1 sprintf(Ftitle) at -100,6 left

f(x) = sin(x)/x
g(x) = (x*cos(x)-sin(x))/x**2 # f'(x)

################
#  実際の表記  #
################
# key: http://dsl4.eee.u-ryukyu.ac.jp/DOCS/gnuplot/node96.html

set title "example"
set key left top                        # at x,y; L/R outside; above/below
set key box linestyle -1 linewidth 0.75 linecolor rgb "gray"
set key title "凡例" font ",12"         # or notitle
set key spacing 1.2 width -3 height 0
set key Left reverse                    # Right/Left jusfitied text
# set nokey

# --- X AXIS ---
set xlabel "{/:Italic x}"
set xrange [-3*pi:3*pi] noreverse
set xtics ()
set for [i=-3:3] xtics add (i*pi)
# set mxtics 5 # unset for logscale

# --- Y AXIS ---
set ylabel "{/:Italic y}"
set yrange [-0.5:1.1] noreverse
set ytics -0.4, 0.2, 1.0 # ("face1" pos1, ..., "faceN" posN)
set mytics 2 # unset for logscale

# --- Y AXIS II ---
# set y2label ""
# set y2range [-1:1] noreverse
# set y2tics -1, 0.1, 1 # ("face1" pos1, ..., "faceN" posN)
# set my2tics 5 # unset for logscale

# --- Z AXIS (3D) ---
# set zlabel ""
# set zrange [-1:1] noreverse
# set ztics -1, 0.1, 1 # ("face1" pos1, ..., "faceN" posN)
# set mztics 5 # unset for logscale

################
#   自由記述   #
################

# set arrow 1 from -5,0 to 185,0 nohead lt 0 lw 2
# set arrow 2 from f2,0.08 to f2,100 nohead lc rgb "forest-green" lw 2
# set arrow 3 from f3,0.08 to f3,100 nohead lc rgb "forest-green" lw 2
# set label 1 sprintf("2D growth") at 0.1,840,4 left
# set label 2 sprintf("810 deg.C") at 0.927,0.17 left
# set label 3 sprintf("700 deg.C") at 1.024,0.315 right

################
#     PLOT     #
################

# lines / points / linespoints // impulses / boxes / steps / fsteps / hsteps
# linetype:  色 -1:black, 1:purple, 2:green, 3:skyblue, 4:yellow, 5:gold, 6: darkblue
# pointtype: 形 1:+, 2:x, 3:star, 4:sq, 5:sq-fill, 6: circle, 7:circle-fill, tri, downtri, diamond, penta

# splot \ # for 3D
plot \
   f(x) with lines linetype 1 linewidth 2 title "sin(x)/x" , \
   g(x) with lines linetype 2 linewidth 2 title "d/dx sin(x)/x" # , \