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When you say ‘EKG’ do you mean full surface |12|-lead, |Lead-II| rhythm strips, or intracardiac recordings (taken with an electr...

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5

Answered 9 months ago

I didn't have any trouble installing it under Windows 7 (Professional). I upgraded from Vista Home Premium to Win 7 Pro, so Win...

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Responded 5 years ago

This works: Xm1 = mean(X(X(:,1)<0,1));

4

Answered 1 month ago

I’ve not used the Data Acquisition Toolbox (I don’t have it), only the Serial Port Devices functions in core MATLAB (with a fing...

Use the <http://www.mathworks.com/help/matlab/ref/subplot.html *|subplot|*> function. Your loop becomes: figure(1) ...

There is one in the Symbolic Math Toolbox: <http://www.mathworks.com/help/symbolic/rewrite.html *|rewrite|*>! To wit: ...

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Your code runs without error and your *|‘a’|* matrix is |(3x3)|. What do you want?

With *|T|* that large, you quickly end up with an array of |Inf| values. This loop will do what you want: A0 = 3; ...

The <http://www.mathworks.com/help/matlab/ref/diag.html *|diag|*> function can do everything you want. You just have to ask it!...

See the documentation for <http://www.mathworks.com/help/symbolic/vpa.html *|vpa|*> and *|double|* (link at the end of the *|vpa...

Not certain what you want, so here are two possibilities: For any |y| on the domain |(-0.03, 0.01)|: f = @(x) 1./(1-7...

Your code didn’t post, but in your previous post, your ODE didn’t do anything that might trigger an ‘event’, like a zero-crossin...

Answered 10 months ago

This works: [d,s,r] = xlsread('Damith test.xls'); DN = datenum([d(:,1:4) repmat([0 0], size(d,1), 1)]); % Convert All...

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Answered 7 days ago

The <http://www.mathworks.com/help/matlab/ref/colon.html *|colon|*> operator creates vectors. In your illustration, it creates ...

Answered 9 days ago

This works: A([1 4], 2:5) = B([1 3], 3:6); It could be made more general if necessary. This is specific because it is ...

Answered 29 days ago

This works: vi = linspace(1, 3, 5); % Interpolation Vector for k1 = 1:size(A,1) Anew(k1,...

In the line that throws the error: xa=(x-xc_t(t)+bx_t(t))/(sr2*betax_t(t)); what is the _value_ of |‘t’|?

In *|R2014b|*, the *|round|* function now supports rounding to a specific number of digits: minval = 0.4410; maxval = ...

Answered 2 months ago

Try this: fidi = fopen('KEmodel12_G201.txt'); d = textscan(fidi, '%f%f%f%f%f%f%f%f', 'HeaderLines',1, 'Delimiter','\n',...

I’m not sure I understand what you want to do, but the <http://www.mathworks.com/help/matlab/ref/cellstr.html *|cellstr|*> funct...

‘It didn’t happen before’ on the same computer or a different computer? To see what Toolboxes you have installed, in the Co...

Answered 3 months ago

The DFT that <http://www.mathworks.com/matlabcentral/answers/164869-error-using-mtimes-is-not-fully-supported-for-integer-classe...

I’ve seen this problem mentioned before. It is a default behaviour of *|bar|*. There is a posted fix for it here: <http://www....

Answered 5 months ago

This works: A=[1,2,3,4; NaN,NaN,5,6; 7,8,NaN,NaN]; B=[20;21;22;23;24;25;26;27]; R = NaN(size(A')); R(~isnan(A')) ...

Use the *|find|* function: V1 = find(V, 1, 'first') The *|find|* function (in its most fundamental application) locates...

Answered 6 months ago

Untested code, but I would change the first line of the function to: function [dCdt]=mass_bal_pG(t,conc,F1,F3) and then...

I don’t have your code or figure, so this is the best I can do: x = linspace(0,10*pi,1000); y = sin(2*pi*sin(x)); ...

If your |m|-files are scripts running independently of each other, my choice would be to use a |.mat| file. Save all the variab...

It is difficult to read your code and I can’t run it. I ran a simulation of the matrix operation you describe, and got a scalar...

This was an interesting project! You will probably have to experiment to get exactly the effect you want, but this will get...

Answered 7 months ago

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