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Using structures instead of vectors?

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Isktaine
Isktaine 2012-9-18
关闭： MATLAB Answer Bot 2021-8-20
Hi,
I'm using ode45 and passing the solutions into another function. Currently I am using the notation
[x,A]=ode45('odes',...)
As I need a continuous function I interpolate over x and A to get the value at any point i in the integration range.
A1_x(i)=interpl(x,A(:,1),'spline')
A2_x(i)=interpl(x,A(:,2),'spline')
I have just noticed the structure notation in the MATLAB documentation. Would the accuracy of my continuous function be greatly improved if I used the
sol=ode45(@odes,...)
notation? So now the solver is outputting 'sol' which is a structure. To recode all my functions using this would take a long time but I'm willing to do it if it will improve accuracy/speed.

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回答（1 个）

Walter Roberson
Walter Roberson 2012-9-18
That doesn't look like structure notation: that looks like function handle notation. The accuracy of function handle notation is exactly the same.
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Isktaine
Isktaine 2012-9-18
编辑：Isktaine 2012-9-18
Sorry, I wasn't clear. It's the 'sol' part that has changed too. To use the structure output, you have to use a function handle notation and that bit is okay. So now the solver is outputting 'sol' which is a structure.

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