文件:USD rate to CNY.svg

#!/usr/bin/gnuplot
# gnuplot 4.2
# gnuplot script for plotting eurofxref-hist.csv as obtained from
# http://www.federalreserve.gov/datadownload/Choose.aspx?rel=H10

# download and unzip data if not available
! [ -f FRB_H10.csv ] || wget -O FRB_H10.csv "http://www.federalreserve.gov/datadownload/Output.aspx?rel=H10&series=c5d6e0edf324b2fb28d73bcacafaaa02&lastObs=&from=01/01/1971&to=02/28/2015&filetype=csv&label=include&layout=seriescolumn"

#input
set timefmt "%Y-%m"
set datafile missing 'ND'
set datafile separator ','

#output
set key top left
set style data lines
set grid

set xdata time
set format x '%Y'
set xtics 157680000
set xrange ['1980-01':'2015-12']
#set mxtics 4

set ylabel 'CNY'
set format y '%.2f'

set term svg size 800,400 font "Arial,10"

set outp 'USD rate to CNY.svg'
set style line 1 lt rgb 'blue' lw 1.5

#available currencies:
#first one is $2, second $3 and so on
#Currency:USD,USD,USD,USD,BRL,CAD,CNY,DKK,HKD,INR,JPY,MYR,MXN,NOK,ZAR,SGD,KRW,LKR,SEK,CHF,TWD,THB,VEB

plot 'FRB_H10.csv' every ::6 usi 1:($8) title '1 USD in CNY' ls 1