#!/usr/bin/env gnuplot
# based on code of [[User:Gorgo]]/[[:c:File:Euro exchange rate to TRY.svg]]

# gnuplot script for plotting eurofxref-hist.csv as obtained from
# http://www.ecb.int/stats/exchange/eurofxref/html/index.en.html
# Before runnig this script, download and unzip to working directory:
# https://www.ecb.europa.eu/stats/eurofxref/eurofxref-hist.zip

infile='eurofxref-hist.csv'
outfile='Euro_exchange_rate_to_TRY_(800px_wide).svg'

# Start und Ende ermitteln (z.Zt. nur für Consolenausagabe)
  stats infile every ::1   u (strptime("%Y-%m-%d",strcol(1))) nooutput
  print '     -----Stats-(Timestamp)----'
  print '     Start:          ', strftime("%d. %B %Y",STATS_min)
  print '     Ende:           ', strftime("%d. %B %Y",STATS_max)
  print '     --------------------------'
# Datum des letzten Updates oben links setzen
# set label 'last update: ' . strftime("%d.%m.%Y",STATS_max) at graph 0.1, graph 0.9


#input
set timefmt "%Y-%m-%d"
set datafile missing 'N/A'
set datafile separator ','

#output
set key bottom right
set style data lines
set border 9              # Rahmen unten (Bit 1) und links (+ Bit 2) 
unset grid                   # Gitterlinien verwenden
# Gitterlinienen per Hand setzen falls gewünscht 
set style line 1 linetype rgb '#696969' linewidth 0.25 # Def. Major-grid
set style line 2 linetype rgb '#C9C9C9' linewidth 0.15 # def. Minor-grid
set grid  xtics mxtics     # eventuell noxtics und nomxtics
set grid  y2tics my2tics     # eventuell noytics und nomytics
set grid  back             # Gitter im Hintergrund
set grid  linestyle 1, linestyle 2 # Setzen des linestyle für Major u. Minor 


set xdata time
set format x '%Y'
set xrange ['1998-12-31':STATS_max + 60*60*24*150] # 150 Tage 'Luft'
set xtics '1950-01-01', 60 * 60 * 24 * 365.25 * 5
set xtics nomirror 
set mxtics 5
# set xlabel 'Date'


unset  ylabel
  set y2label 'TRY'
#unset format y
  set format y2  '%.0f'
unset  ytics
  set y2tics 1
unset  mytics
  set my2tics 5
#  set ytics  nomirror
  set y2tics nomirror

# Zebramuster 
set style rect fillcolor lt -1 fillstyle solid 0.03 noborder 
do for [i=1950:2050:1] {
  rec_q1_begin =sprintf("%1.4d-04-01",i)
  rec_q2_begin =sprintf("%1.4d-07-01",i)
  rec_q3_begin =sprintf("%1.4d-10-01",i)
  rec_end      =sprintf("%1.4d-01-01",i + 1)
  set object rectangle from rec_q1_begin,graph 0 to rec_end, graph 1
  set object rectangle from rec_q2_begin,graph 0 to rec_end, graph 1
  set object rectangle from rec_q3_begin,graph 0 to rec_end, graph 1
}

## gnuplot for SVG - gnuplot 4.2 / Ubuntu 8.10 
if (GPVAL_VERSION >= 5.0) {
  set term svg size 800,400 font "Arial,16"
} else {
  set term svg size 800,400 font "Arial,12"
}

set outp outfile
set style line 1 lt rgb 'blue' lw 1

#available currencies:
#first one is $2, second $3 and so on
#USD,JPY,BGN,CYP,CZK,DKK,EEK,GBP,HUF,LTL,LVL,MTL,PLN,ROL,RON,SEK,SIT,SKK,CHF,ISK,NOK,HRK,RUB,TRL,TRY,AUD,BRL,CAD,CNY,HKD,IDR,ILS,INR,KRW,MXN,MYR,NZD,PHP,SGD,THB,ZAR

plot \
  infile \
    usi 1:($26)         axis x1y2 tit '1 EUR in TRY'           lt rgb 'blue'       lw 1,\
  infile \
    usi 1:($25/1000000) axis x1y2 tit '1 EUR in 1 000 000 TRL' lt rgb 'dark-violet' lw 1,\