噓~

introduction:  指令畫圖

  1.plot 1D/2D figures

  2.plot functions or read data-files to plot  figures

  3. curve fitting

start:

1. 所有指令寫再test.sh中

2.執行gnuplot test.sh 即可得到結果

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test.sh

set title "sin function"
set xrange[0:2*pi]
set yrange[-1:1]
set xlabel "x"
set ylabel "sin(x)"
set terminal svg
set output "test.svg"
plot[0:2*pi] sin(x)

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how to write functions?

f(x)=c/((x-a)*(x-a)+b)+d/sqrt(x)

or

f(x)=c/((x-a)**2+b)+d/sqrt(x)
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how to label?

http://lavica.fesb.hr/cgi-bin/info2html?(gnuplot)label
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good ref for commond:

http://physicspmb.ukzn.ac.za/index.php/Gnuplot_tutorial

good ref for all:

http://gtchen.pixnet.net/blog/post/5873441-gnuplot-(part-i)