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| View Original: | Linear least squares example2.png (1245x1569) | |||
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| Keywords: Linear least squares example2.png Illustration of linear least squares self-made with MATLAB 04 12 24 May 2008 UTC Oleg Alexandrov Created with MATLAB Linear_least_squares_example2 svg 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 0 100 0/256; green 0 139 0/256; yellow 254 194 0/256; white 0 99 1 1 1; gray 0 1 white; Xr 1 2 3 4; Yr round 1+1 5 Xr+4 rand 1 4 Yr 9 13 15 14; Yr 6 5 7 10; A min Xr -1; B max Xr +1; C min Yr -1; D max Yr +1; N 100; small 0 2; X linspace A B N ; least squares fitting Yr Yr'; Xr Xr'; Mat 0 Xr+1 Xr; V Mat' Yr; V Mat V Mat' Mat \V; pe V 1 ; qe V 2 ; V 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; axis equal; grid off; for i 1 length Xr plot Xr i Xr i Yr i pe+qe Xr i 'color' green 'linewidth' 0 95 lw ; end myrad 0 12; for i 1 length Xr ball Xr i Yr i myrad red ; end plot X pe+qe X 'b' 'linewidth' lw ; set gca 'GridLineStyle' '-' 'xcolor' gray ; set gca 'GridLineStyle' '-' 'ycolor' gray ; set gca 'XTick' A 1 B ; set gca 'YTick' C 1 D ; Yr - pe+qe Xr axis equal; axis A B C D ; 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 | ||||
