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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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Answered 1 year ago

POLYPARCI calculates confidence intervals for parameters estimated by ‘polyfit’.

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1 year 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 6 months 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) ...

Use the *|coeffs|* function and then get slightly creative: syms x y z f = 2*x*y*z - x*z - y*z - x*y + 1; [cf,T] = c...

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Answered 10 days ago

Because your instructor told you to, so you’ll learn how they work.

Answered 4 months ago

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

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...

There are several problems with your code. This works: yfirst=[.8967e07 1.6294e07 2.6587e07 3.2537e07 3.6136e07 3.841...

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Answered 14 days ago

Very interesting problem! The solution parallels the technique used to fit differential equations using curve fitting functions...

Answered 16 days ago

Create it as a cell array, and use *|unique|*. It will give you _almost_ what you want, however *|unique|* sorts the results, s...

Answered 21 days ago

Your *|‘g’|* is incorrect. This works: pn = [1 0 1]; % Polynomial res = 1; ...

Answered 1 month ago

Use the <http://www.mathworks.com/help/matlab/ref/format.html *|format|*> function. You may want to use *|format longE|*.

Use the <http://www.mathworks.com/help/matlab/ref/bar.html *|bar|*> function with the |'grouped'| option. The error bars and th...

Use the <http://www.mathworks.com/help/matlab/ref/sortrows.html *|sortrows|*> function, specifying column |#1|.

Answered 3 months ago

The |‘48’| are ASCII representations of the string representation of zero. The first row of your array must be a vector of char...

If you have *|R2015a|*, you can invert it the old-fashion way with <http://www.mathworks.com/help/symbolic/partfrac.html *|partf...

Use the tilde |‘~’| to suppress outputs you don’t need. In this instance: [~,ia] = setdiff(A,B)

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

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

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 5 months 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’|?

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