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# Problem 970. Piecewise linear interpolation

Solution 1074909

Submitted on 5 Dec 2016 by PurpleDiab
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### Test Suite

Test Status Code Input and Output
1   Pass
x=[1 1 ; 2 3 ; 4 2 ; 5 -2]; y=[6 5 3]; y_correct=[1 1 ; 1.2 1.4 ; 1.4 1.8 ; 1.6 2.2 ; 1.8 2.6 ; 2 3 ; 2.5 2.75 ; 3 2.5 ; 3.5 2.25 ; 4 2 ; 4.5 0 ; 5 -2]; assert(all(all(abs(tracers(x,y)-y_correct)<1e-9)))

out = 1.0000 1.0000 1.2000 1.4000 1.4000 1.8000 1.6000 2.2000 1.8000 2.6000 2.0000 3.0000 2.5000 2.7500 3.0000 2.5000 3.5000 2.2500 4.0000 2.0000 0 0 0 0 out = 1.0000 1.0000 1.2000 1.4000 1.4000 1.8000 1.6000 2.2000 1.8000 2.6000 2.0000 3.0000 2.5000 2.7500 3.0000 2.5000 3.5000 2.2500 4.0000 2.0000 4.5000 0 5.0000 -2.0000

2   Pass
a=ceil(100*rand)+10; x=[0 0 ; a a]; y=a+1; y_correct=[0:a ; 0:a]'; assert(all(all(abs(tracers(x,y)-y_correct)<1e-9)))

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