How do I input a matrix (variable) in a function?

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hithere 2014-10-22

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评论： hithere 2014-10-22

采纳的回答： Mohammad Abouali

I created a function:

.

x is the excitation wavelength where i will input eg. " test,wavelength(765,y)"

.

y is a 729 by 1 matrix: .

.

the result is:

.

where only the first number of y matrix is being implemented in the function. How do i create a function where the first number of y matrix will be implemented and return as a result as the first number in wavelengtha matrix and so on.

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the cyclist 2014-10-22

The screenshots are very helpful in understanding your problem. I suggest not using them for the actual code, though, so that we can copy & paste your code into MATLAB ourselves.

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Answer 1

Mohammad Abouali 2014-10-22

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1) why you have comma in your function name?

2) Change your equation in element wise division as follow:

wavelengtha= 1./ ((1./x)-(y/10^7))

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Mohammad Abouali 2014-10-22

One way is to do this:

let's say x=[765, 766, 777]

then you can do this:

for i=1:numel(x) wavelengtha{i}= yourFunction(x(i), ...) end

I still don't get the comma in your function name?

hithere 2014-10-22

sorry i have rename my function to just

.

function [wavelengtha] = test(x,y)

wavelengtha = 1./ ((1./x)-(y/10^7));

for i=1:numel(x)

wavelengtha{i}= test(x(i), ...);

end

. However i cant get the for loop to work.

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Answer 2

the cyclist 2014-10-22

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在 MATLAB Online 中打开

I'm not sure I fully understand what you mean, but does this do what you intend?

wavelengtha = 1./((1./x) - (y/10^7));

Notice that I used element-wise division.

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hithere 2014-10-22

Thank you for you help!

As far as i understand. the result will return as a new variable in my workspace. Even when i change the input of x. The resulted variable will replace my previous work. is there a way to have the resulting variable number somewhat related to my input x eg(x = 765. then the wavelengtha out automatically output as wavelengtha765 something like that)

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