Problem 486. Surface Fit z(x,y)

Solution 853475

Submitted on 19 Mar 2016 by William

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Test	Status	Code Input and Output
1	Pass	x= [0 0 1 1 2 2 3 3]; y= [0 1 0 1 0 1 0 1]; z=[-4 -1 -3 -2 0 -1 5 2]; c=[1 -2 3 -4]; assert(isequal(c,round(sufit(x,y,z))))
2	Pass	x= rand(1,100); y= rand(1,100); z=7x.^2-9x.y+11y.^2-17; c=[7 -9 11 -17]; assert(isequal(c,round(sufit(x,y,z))))
3	Pass	x= rand(1,10000); y= rand(1,10000); z=17x.^2-19x.y+11y.^2-13; c=[17 -19 11 -13]; assert(isequal(c,round(sufit(x,y,z))))

Test

Status

Code Input and Output

Pass

x= [0 0 1 1 2 2 3 3]; y= [0 1 0 1 0 1 0 1]; z=[-4 -1 -3 -2 0 -1 5 2]; c=[1 -2 3 -4]; assert(isequal(c,round(sufit(x,y,z))))

Pass

x= rand(1,100); y= rand(1,100); z=7*x.^2-9*x.*y+11*y.^2-17; c=[7 -9 11 -17]; assert(isequal(c,round(sufit(x,y,z))))

Pass

x= rand(1,10000); y= rand(1,10000); z=17*x.^2-19*x.*y+11*y.^2-13; c=[17 -19 11 -13]; assert(isequal(c,round(sufit(x,y,z))))