How do I define and use a standard range written by variable

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edo nissim
edo nissim 2020-2-4
评论： Walter Roberson 2020-2-4
Hi every one!
I want to define the standard range "690N to 1200N" (N has to be a positive and integer number).
hen when i get a number I want to check if the number that I got is in my range (690-1200 or 1380-2400 or 2070-3600 or...).
Thank you very much!
Robert

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回答（2 个）

Ruger28
Ruger28 2020-2-4
N = 1;
RangedValues = [690*N:1200*9]; % set your range, assuming your values are always 690 and 1200 * N
Num2Check = 1459; % number to see if it is within range
if Num2Check >= RangedValues(1) && Num2Check <= RangedValues(end) % check greater than first value and less than last
disp('Number is within range');
% rest of code below since nnumber is within range
end
  2 个评论
edo nissim
edo nissim 2020-2-4
Thank you but I know how to check if the N is known (like you did with N=1).
I would like to know when I dont know what is N and it is can be any number/ I want the the software to with the options of N automatically. thanks.
Walter Roberson
Walter Roberson 2020-2-4
if ~exist('N', 'var') || isempty(N)
you do not know what N is
else
N exists and is non-empty but you need to check that it is valid
end
See also https://www.mathworks.com/help/matlab/ref/double.discretize.html

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Fangjun Jiang
Fangjun Jiang 2020-2-4
编辑：Fangjun Jiang 2020-2-4
N=10; % provide a reasonable number based on the range of input data
n=1:N;
LowBound=690*n;
HighBound=1200*n;
InputData=[100 1000 1300 1400]' ;
OutputFlag=any(and(InputData>LowBound, InputData<HighBound),2)

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