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| View Original: | Linear least squares example.png (428x526) | |||
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| Keywords: Linear least squares example.png Illustration of linear least squares self-made with MATLAB 05 30 22 May 2008 UTC Oleg Alexandrov Created with MATLAB Source code MATLAB <source lang matlab > Illustration of linear least squares function main KSmrq's colors red 0 867 0 06 0 14; blue 0 129 205/256; green 0 200 70/256; yellow 254 194 0/256; white 0 99 1 1 1; gray 0 1 white; Set up the grid and other parameters Xr -1 0 2 4; Yr 3 6 8 9; N 100; small 0 2; X linspace min Xr -4 small max Xr +4 small N ; C -4; D 4; Set up the figure lw 5; linewidth lw2 lw/2; fs 22; font size figure 1 ; clf; hold on; set gca 'fontsize' fs ; set gca 'linewidth' lw2 hold on; grid on; random numbers s 0 16; a 1 2; b 3; c 1; p 1; q 6 5; r 1 3; M 50; p s p; q s q; r s r; myrad 0 1; for i 1 length Xr ball Xr i Yr i myrad red ; end axis equal; least squares fitting Yr Yr'; Xr Xr'; Mat 0 Xr+1 Xr; V Mat' Yr; V Mat' Mat \V; pe V 1 ; qe V 2 ; plot X pe+qe X 'b' 'linewidth' lw ; grid on; set gca 'GridLineStyle' '-' 'xcolor' gray ; set gca 'GridLineStyle' '-' 'ycolor' gray ; set gca 'XTick' min Xr 1 max Xr ; axis equal; axis min Xr -2 small max Xr +2 small min Yr -2 small max Yr +4 small ; saveas gcf 'Linear_least_squares_example eps' 'psc2' ; save as eps function ball x y r color Theta 0 0 1 2 pi; X r cos Theta +x; Y r sin Theta +y; H fill X Y color ; set H 'EdgeColor' 'none' </source> linear regression Files by User Oleg Alexandrov from en wikipedia Images with Matlab source code math | ||||
