Arithmetic problem with for loop

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Mustafa Uysal 2019-5-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/463548-arithmetic-problem-with-for-loop

评论： Mustafa Uysal 2019-5-23

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

Hi, i am new with MATLAB.

I would like to use this formula in for loop: ℓ?=taper1*ℓ?−1

There is no error message but i can't see a proper value on output. (i control my values with calculator programs) (i checked my variables. and confirmed that they are true before this loop).

And my second problem is i don't know how to add new line with every increment.

Here is my try:

l= (1:N); //creating and empty array
l(1)=((3*(10^8))/(2*f1)); //formula 
for i = 2:N
    l(i) = taper1 * l(i - 1);
    set(handles.popupmenu3,'String',l(i) );
end

i tried to add new line with this but didn't work

set(handles.popupmenu3,'String',l(i) \n );

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Rik 2019-5-22

Most of what you have shown here is not valid Matlab syntax. It seems like you lack the basics of Matlab. It is really useful to learn the basics before attempting more complicated things. This even holds true for a relatively simple language as Matlab.

This is one of many tutorials you could try.

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采纳的回答

Walter Roberson 2019-5-22

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/463548-arithmetic-problem-with-for-loop#answer_376219

编辑：Walter Roberson 2019-5-23

在 MATLAB Online 中打开

l = zeros(1,N); %creating and empty array
l(1) = ((3*(10^8))/(2*f1)); %formula 
for i = 2:N
    l(i) = taper1 * l(i - 1);
    handles.popupmenu3.String{end+1} = num2str( l(i) );
    drawnow();
end