make the line with the graph

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whiyan
whiyan 2020-12-15
回答： Alan Stevens 2020-12-15
vin=linspace(0.2,2.8);
if vin < 0.5
current=0;
elseif 1.5 > vin >= 0.5
current=(860*10^-6)*(vin-0.5).^2;
elseif 2.5 > vin >= 1.5
current=(860*10^-6)*(2*(vin-0.5)*0.049-(0.049)^2) ;
elseif vin >= 2.5
current=(860*10^-6)*(2*(vin-0.5)*0-(0)^2) ;
end
end
plot(vin,current)
---------------------------------
Above is the code and hoped that make it into divided 4 part. (current versus vin)
but it has errors and could not catch how can mend it.

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采纳的回答

Alan Stevens
Alan Stevens 2020-12-15
More like this
vin=linspace(0.2,2.8);
current = zeros(1,numel(vin));
for i = 1:numel(vin)
v = vin(i);
if v < 0.5
current(i)=0;
elseif 1.5 > v && v >= 0.5
current(i)=(860*10^-6)*(v-0.5).^2;
elseif 2.5 > v && v>= 1.5
current(i)=(860*10^-6)*(2*(v-0.5)*0.049-(0.049)^2) ;
elseif v >= 2.5
current(i)=(860*10^-6)*(2*(v-0.5)*0-(0)^2) ;
end
end
plot(vin,current)

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