My graph isn't picking up my time increments. How can I fix it? My loop generates my x values, but I'm trying to graph them over time.

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BAILEY MCMASTER 2023-9-25

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https://ww2.mathworks.cn/matlabcentral/answers/2025287-my-graph-isn-t-picking-up-my-time-increments-how-can-i-fix-it-my-loop-generates-my-x-values-but-i

评论： BAILEY MCMASTER 2023-9-25

采纳的回答： KSSV

在 MATLAB Online 中打开

% Ch=(Chd-Chs)e^(-t/ts)+Chs equation from C.3

clear

Ts=30; % ms

Td=60; % ms

Chs=.001; % L/mmhg

Chd=.015; % L/mmhg

N=800; % number of elements

t=0:1:800; % all time values together

for i=0:N

if any(i==0:99)

Ch(i+1)=Chd; % starts at .015 L/mmhg in chd phase

elseif i>99 & i<350

Ch(i+1)=(Chd-Chs)*exp((-t(i))/Ts)+Chs; % switches to chs

elseif i>349

Ch(i+1)=(Chs-Chd)*exp((-t(i))/Ts)+Chd; % switches back to chd

end

timebase=0:.01:8; % putting back in s

plot(timebase,Ch)

grid on

ylim([0 .02])

xlabel('time(s)')

ylabel('Ch (L/mmHg')

It's not picking up my y values, I'm trying to graph this over time and it's not working, it shouldn't be a straight line up and down, but its turning out that way.

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Dyuman Joshi 2023-9-25

Can you attach the reference equations you are trying to plot?

BAILEY MCMASTER 2023-9-25

The reference equations are the equations of the loop, compliance during systole and diastole. I'm doing a time interval showing the changes of compliance over an interval.

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Answer 1

KSSV 2023-9-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2025287-my-graph-isn-t-picking-up-my-time-increments-how-can-i-fix-it-my-loop-generates-my-x-values-but-i#answer_1317347

在 MATLAB Online 中打开

clear
Ts=30; % ms
Td=60; % ms
Chs=.001; % L/mmhg
Chd=.015; % L/mmhg
N=800; % number of elements
t=0:1:N ; % all time values together
Ch = zeros(1,N) ; 
for i=1:length(Ch)+1
    if i<=99
        Ch(i)=Chd; % starts at .015 L/mmhg in chd phase
    elseif i>99 && i<350 
        Ch(i)=(Chd-Chs)*exp((-t(i))/Ts)+Chs; % switches to chs
    else
        Ch(i)=(Chs-Chd)*exp((-t(i))/Ts)+Chd; % switches back to chd
    end
end
timebase=0:.01:8; % putting back in s
plot(timebase,Ch)
grid on
ylim([0 .02])
xlabel('time(s)')
ylabel('Ch (L/mmHg')