How to write a function that generates a hyperlink that runs a function?

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Jeroen 2013-3-30

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https://ww2.mathworks.cn/matlabcentral/answers/69224-how-to-write-a-function-that-generates-a-hyperlink-that-runs-a-function

I'm looking for a way to run a random function with input arguments by clicking a hyperlink in the command window.

In my case, I wrote some functions (Riemann method, Trapezoidal Rule, etc.) to approximate the value of definite integrals. They all have f, a, b and n as input arguments, where f is a function implemented with the syms operator (e.g. f(x)=x^2), a and b are the bounders and n is the amount of intervals. I would now like to 'collect' all these functions in one new function, named integral with the same input arguments, that displays a hyperlink in the command window for each 'integrate function'. So, when one clicks such a hyperlink, the corresponding function is runned. I tried:

function [  ] = integral( f,a,b,n )
disp('<matlab:riemann(f,a,b,n) Riemann>')
disp('<matlab:trapezoid(f,a,b,n) Trapezoid>')
...
end

This doesn't work however, because the f, a, b and n in the display apparently aren't defined.

Is there a way to achieve my goal? Alternatives like pop-up windows and buttons instead of hyperlinks are welcome aswell.

Thanks in advance!

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Answer 1

Walter Roberson 2013-3-30

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https://ww2.mathworks.cn/matlabcentral/answers/69224-how-to-write-a-function-that-generates-a-hyperlink-that-runs-a-function#answer_80479

在 MATLAB Online 中打开

fprintf('<matlab:plus(%d,%d) Sum>\n', a, b)

Note change from sum() to plus() -- unless, that is, you want "b" to be the dimension over which to sum the array "a"

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Walter Roberson 2013-3-30

编辑：Walter Roberson 2013-3-30

在 MATLAB Online 中打开

For your expanded question:

function [  ] = Link_integral( f,a,b,n )
  fstr = ['@(x) ' char(f)];
  intargs = sprintf('(%s,%g,%g,%d)', fstr, a, b, n);
  fprintf('<matlab:riemann%s Riemann>\n', intargs);
  fprintf('<matlab:trapezoid%s Trapezoid>\n', intargs);
end

The function would be slightly different if you want the symbolic form to continue to be received as symbolic:

fstr = ['sym(''' char(f) ''')'];

Jeroen 2013-3-30

编辑：Jeroen 2013-3-30

在 MATLAB Online 中打开

I get 2 errors:

Error using sym/subsindex (line 1367)
Indexing input must be numeric, logical or ':'.
Error in riemann (line 4)
f(x)=f;

Edit: O, I've been a bit too fast! It works when I use

fstr = ['sym(''' char(f) ''')'];

Thanks a lot for helping me Walter!

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How to write a function that generates a hyperlink that runs a function?

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