The interpolation interp1 command is taking wrong values.

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kajal shah
kajal shah 2017-2-3
回答： cr 2017-2-6
The command line is
Te_loop_max(i)=interp1(Ne,Temax,pbatt_const_Ne(i),'cubic')
inside a loop; The Temax,Pbatt are taking wrong values, . So the interpolation is coming 0 always. I am working on embedded function, simulink. Display and print command showing different values of Temax
disp(fprintf('Temax=%10.3f',Temax));
Te_loop_max(i)=interp1(Ne,Temax,pbatt_const_Ne(i),'cubic');
disp(fprintf('Ne=%10.1f, Temax=%10.3f, pbatt=%10.3f',Ne,Temax,pbatt_const_Ne(i)));
output: Temax= 12.515Temax= 12.628Temax= 13.337Temax= 13.449Temax= 13.188Temax= 13.188Temax= 12.814Temax= 12.142Temax= 10.759Temax= 9.564
Ne= 2000.0, Temax= 2500.000, pbatt= 3000.000Ne= 3250.0, Temax= 3500.000, pbatt= 4000.000Ne= 4500.0, Temax= 5000.000, pbatt= 5500.000Ne= 6000.0, Temax= 12.515, pbatt= 12.628Ne= 13.3, Temax= 13.449, pbatt= 13.188Ne= 13.2, Temax= 12.814, pbatt= 12.142Ne= 10.8, Temax= 9.564, pbatt= 2000.000 343
Please suggest

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回答（1 个）

cr
cr 2017-2-6
Generally, Ne and Temax are expected to be vectors. It is not clear why the statement is inside a loop. If you want to find interpolated values at various values of pbatt_const_Ne make it a vector too.

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