Plotting double data in Simulink Scope

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Wenqing Qiu
Wenqing Qiu 2020-2-20
回答： Samatha Aleti 2020-2-24
i want to plot some data by using Simulink Scope, here is my simplified Simulink model:
and there are my code in the MATLAB Function Block:
function pCO2_a = Oxy(Qg)
coder.extrinsic('testWQ');
pCO2_a = zeros(41,1);
pCO2_a = testWQ();
end
what am i trying to call is another ode function:
function y = testWQ
Qg = 3;
tspan = [0 5];
y0 = 0;
[t, Y] = ode45(@f,tspan,y0);
y = Y(:,1);
function dydt = f(t,y)
dydt = Qg*t;
end
end
And then i ran my Simulink model, in the Scope will of course show many horizontal lines instead of one line with time. I know the reason is because pCO2_a = testWQ() will get double data, but is there any way i can still get the right diagram with this data in Scope?

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回答（1 个）

Samatha Aleti
Samatha Aleti 2020-2-24
Hi,
You should be able to view many horizontal lines in the SIMULINK scope, provided your output vector “y” holds elements of different values. Check whether the elements of “y” are of different values or not.

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