Attempting to combine row vectors

2 views (last 30 days)
So I am modeling the compliance of the left ventricle in heart. In doing so, there is a compliance, Chd (from 0 to 99 milliseconds and again from 350 milliseconds to 800ms), for diastolic phases and another, Chs, for systolic phases (from 100ms to 350 ms). I need to combine these two to model Ch, the compliance of the ventricle overall and then create the corresponding plot. (I know Ch=Chd+Chs is incorrect. Here is my code so far:
%parameters Chd=.01 %(L/mmHg) limit of diastolic compl
Chs=.001 %(L/mmHg)limit of systolic compl
Ts=30 %(ms)
Td=60 %(ms)
t=(0:1:800) %(milliseconds)
ChS=(Chd-Chs)*exp(1).^(-t/Ts)+Chs %Ventricular compliance during systole
ChD=(Chs-Chd)*exp(1).^(-t/Td)+Chd %Ventricular compliance during diastole
Ch=ChS+ChD %overall compliance
plot(t,Ch)
xlabel('time (ms)')
ylabel('Ch (L/mmHg)')
  2 Comments
Image Analyst
Image Analyst on 27 Sep 2019
Rescued from spam quarantine.
Guillaume
Guillaume on 27 Sep 2019
What does combine mean mathematically? You tell us it's not addition. is it concatenation, something else?

Sign in to comment.

Accepted Answer

Jon
Jon on 27 Sep 2019
Edited: Jon on 27 Sep 2019
If my understanding of what you are trying to do is correct you can do this as:
Ch = [ChD(1:99) ChS(100:350) ChD(351:800)]
So you are building a single signal Ch whose first segment is given by the Distolic, a middle segment by the Systolic, and then a final segment given by the Dystolic.
Is this what you are trying to accomplish? If not please explain further.

More Answers (0)

Categories

Find more on Biomedical Imaging in Help Center and File Exchange

Products


Release

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!