Specify the y value where the graph should start

Question

Marie Vangen 2021-2-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/741942-specify-the-y-value-where-the-graph-should-start

回答： madhan ravi 2021-2-10

Im trying to make a graph with two plots where the one called n should only plot up to y = 0.593, but im kinda stuck on how to do that

%Variabler
A_sveip = 2.27;
luft_tett = 1.225;
%Virkningsgrad
v_0k5 = [0:0.5:30.5];
P_0k5 = [0 0 0 0 0 20 30 50 70 95 120 160 210 270 310 360 390 420 470 540 670 730 750 760 770 775 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 0 0 0 0 0 0 0 0 0 0 0 0];
n=[];
for i = 1:length(v_0k5)
    y(i) = (2*P_0k5(i))/(luft_tett*A_sveip.*((v_0k5(i))^3));
    n = y < 0.593;
end
yyaxis right
plot(v_0k5,n)
yyaxis left
hold on
plot (v_0k5,P_0k5)

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Answer 1

madhan ravi 2021-2-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/741942-specify-the-y-value-where-the-graph-should-start#answer_620422

在 MATLAB Online 中打开

%Variabler

A_sveip = 2.27;

luft_tett = 1.225;

%Virkningsgrad

v_0k5 = [0:0.5:30.5];

P_0k5 = [0 0 0 0 0 20 30 50 70 95 120 160 210 270 310 360 390 420 470 540 670 730 750 760 770 775 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 780 0 0 0 0 0 0 0 0 0 0 0 0];

y = (2*P_0k5) ./ (luft_tett*A_sveip.*v_0k5.^3);

in = y < 0.593;

yyaxis right

plot(v_0k5(in), y(in))

yyaxis left

hold on

plot(v_0k5, P_0k5)