File:LinearRegression.svg

[edit] Gnuplot source code

set terminal svg fname "Helvetica" fsize 25
set output "LinearRegression.svg"
set key left
set xtics axis 4.0,0.5
set ytics nomirror 1
set border 2
f(x) = a*x + b
fit f(x) 'randpts' using 1:2 via a,b
set yrange [-0.9:4]
plot 'randpts' with points pointtype 7 pointsize 0.3 title 'Datapoints', \
        f(x) with lines linetype 3 linewidth 3 title 'Regression',  \
        0 with lines linetype -1 notitle

The datafile 'randpts' was made in GNU Octave using the commands

f = fopen('randpts', 'w');
for i=1:200; 
   x=rand(1); 
   y=0.2*randn(1) + 3*x + 0.35; 
   fprintf(f, '%g %g\n', x, y); 
end
fclose(f)

(identical code also works in Matlab.)

[edit] Licensing

This work has been released into the public domain by its author, I, Berland. This applies worldwide. In some countries this may not be legally possible; if so: I, Berland grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Public domainPublic domainfalsefalse

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	12:50, 28 October 2008		600 × 480 (41 KB)	F l a n k e r	(Reverted to version as of 10:01, 28 October 2008)
	10:16, 28 October 2008		600 × 480 (42 KB)	F l a n k e r	(Using Helvetica as the font)
	10:13, 28 October 2008		600 × 480 (42 KB)	F l a n k e r	(Using Helvetica as the font)
	10:01, 28 October 2008		600 × 480 (41 KB)	F l a n k e r	(Tring to resolve)
	09:30, 28 October 2008		600 × 480 (23 KB)	Wiso	({{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }})
	20:57, 25 June 2007		600 × 480 (20 KB)	Berland	({{Information |Description=Illustration of linear regression on a data set. |Source=self-made in Gnuplot. |Date=24 June 2007 |Author= Berland }} ==Gnuplot source code== set terminal svg fname "Helvetic)
	18:56, 24 June 2007		600 × 480 (19 KB)	Berland	({{Information |Description=Illustration of linear regression on a data set. |Source=self-made in Gnuplot. |Date=24 June 2007 |Author= Berland }} ==Gnuplot source code== set terminal svg fname "Helvetic)

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